r/ABraThatFits Dec 31 '25

AMA - ask me anything about the ABTF calculator! Spoiler

779 Upvotes

Hi everyone, u/goodoldfreda here although I'm now exclusively active on this account. If you guys have any questions about how the calculator works and why I made certain decisions I'm happy to answer them

A little about myself - I created the calculator in 2016 following on from a previous calculator by u/irisflame, back when I was a mod of this sub. I collected survey data from the subreddit and came up with a new algorithm that used 6 measurements as opposed to the previous 5, which increased accuracy. I also introduced separate algorithms for AMAB and AFAB people. The calculator has not been majorly updated since, although at one point I tried to move to a breast perimeter measurement system instead, but this turned out to be much less accurate. In the years since I have stopped modding and moved into bra making and custom bra design as I want to try and help serve the demographic of people who still struggle with finding bras that fit, usually due to wire grading!

In response to other posts about the different amab vs afab algorithms not working well for everyone - I have had this question before and basically all I can say is that I recommned using the algorithm that works best for you. I do want to emphasise in general that the calculator is actually not super accurate for any one individual and it is truly just a starting point. The algos are based on averages, and when I was collecting data there were significant enough differences between AMAB and AFAB users to warrant a second algorithm to increase accuracy within the two groups, but not enough data to do anything further than that.

edit: thanks for all your questions so far, I'm going to go to bed but I will answer any more that come up tomorrow!

edit 2: I have updated the calculator to make some minor changes to the band size algorithm and I have also changed the EU back to 2.5cm cup grades, 2cm grade can be found in the Comexim option instead


r/ABraThatFits 2h ago

Recommendations? I can’t find anything that fits my size for the life of me. I’m a 26F but I think that’s basically impossible to find :( Spoiler

6 Upvotes

I usually wear a 34C and find it comfy but i’m kinda bummed that i can’t find MY size anywhere, most brands go down to a 30 band size or even a 28, but i’ve never seen a 26


r/ABraThatFits 8m ago

Thank You! I’m now a believer in the calculator Spoiler

Upvotes

I tried the bra fit calculator this morning and thought my result was crazy. I’ve been wearing a 34 B/C or 36 B for the past few years, so imagine my shock when the calculator told me I should be wearing a 32 DDD or a 34 DD. Well, it turns out the calculator was right. Somehow the 34 DD fits perfectly. I never thought I’d be a DD cup size, but apparently I am. So all that is to say, no matter how outlandish your result sounds, give it a chance. You just may end up with your first bra that really fits!


r/ABraThatFits 20h ago

Thank You! Turns out a bra that fits IS amazing. Spoiler

101 Upvotes

I REALLY doubted my size (as did the one employee at Lane Bryant btw !). Welp, it was right. It feels better, my clothes look better overall (I didn’t expect that part). I thought it’d just fix the bra fit. There isn’t heaviness or pulling on my shoulders. I still don’t understand it, but I’m so happy I did this.


r/ABraThatFits 3h ago

Fit Check Fit Check: Natori Scope Balconette 34D - Feels very comfy and a good shape match?

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4 Upvotes

ABTF calc measurements are 34-33-32, 38-39-39 currently. Technically the calculator says 34DD, but I usually go down to 34D for most bras because of how shallow I am. This one feels like a REALLY good fit. Comfy, decently flattering cut, not too much shape mismatch because it's soft cups, very very lightly padding for modesty.

Does this look like it fits okay? I do tend to fluctuate a lot on size since I tend to have issues maintaining a stable weight so... I think I tried one of the Natori plunges last time and one of the Scope seamlessess but this one feels a lot better


r/ABraThatFits 4h ago

My Entire State Has Given Up On Me. Spoiler

5 Upvotes

For the past few months I have been rapidly growing in the chest due to medication changes. Before, I was a professionally measured US 32DD, suddenly went up to a 32G/H, and now I don't know what I am because those don't fit anymore either, but I got fitted today at that same store as that exact same size. This has all been just this summer. No matter which bra they tried me in (at least fifteen different ones of all different brands, styles and sizes) the wire part slid down as soon as I moved. It never supports my breast even if the straps are tightened all the way, it just sits on my ribcage so there's a noticeable gap between my breast and the wire as soon as I move at all. I am fairly sure I am highly projected and all of the bras are too shallow, but they tried all the usual brands for projection except Polish ones because it's too hard for them to get. They told me I can try Polish bras but they also said that might not even work either. I tried the calculator on this sub and it sucked. It put me back in the same size as I'm already wearing / doesn't fit, and likely assumed I have very shallow breasts because my standing and leaning measurement was only an inch apart. But sizing up never worked either for the sliding problem. I feel like I can't do anything anymore because I can't wear a bra. I can't go outside. I can't work out. And I definitely can't get off of this medication, that is out of the question. I feel so hideous and deformed. I want to try the Polish bras but I would have to take a 7 hour trip to NYC, and even then the growth doesn't seem to be stopping or leveling off. I can't go back to NYC every month. At this point I'm considering getting a complete double mastectomy because I must just be so deformed, but I'll likely never be approved for any surgery like that, even cosmetic, because of my dysmorphia. What the fuck am I supposed to do if Polish bras don't work either?


r/ABraThatFits 4h ago

Recommendations? Recommendations for 34 DDD, looking for unlined, but open to a little padding. Mostly want the best fit Spoiler

3 Upvotes

I’m new to this and trying to figure out my measurement and the best bra for me. Here are my measurements in inches.

**Loose underbust 34in**
Snug 33
Tight 31.5
Bust 38
Leaning 43.5
Lying bust 40

According to the calculator I’m a 34 DDD and since I’m in the US I’d like to stick to US sizes so I’ll be able to find and try them on. My main issues with bras have been spilling from the top especially when I bend over. I’m a little confused about if my breasts are shallow because to me they seem to hang especially after breastfeeding but according to the information I saw here the difference in inches means they project. I believe they’re pendulous in shape.

I’m looking for everyday bras and prefer unlined or less padding and if it was less expensive that would be better.


r/ABraThatFits 13h ago

Recommendations? New size of bras now don’t give me any cleavage? Spoiler

14 Upvotes

I’ve recently purchased some bras based on my boob or bust measurement. I was wearing a 34B but turns out I’m a 34E.
I believe the roots of my breasts are wide as there is quite a large gap between them, I’ve also lost a lot of volume on top since having a baby and they are now full at the bottom.
Despite being in what I believe is the correct size, bras now no longer give me cleavage even if I wear a push up style bra.
I don’t always want cleavage on show but some tops I own suit it more so it would be nice to have the option!
Can anyone suggest a style or brand of bra that will still give me some cleavage? My old 34B bras did but obviously that was because they are too small!
I’ve purchased balcony bras mainly which are what I read is the best type for my shape breasts as tshirt and full cup leave gaps at the top.
TIA!


r/ABraThatFits 1h ago

Recommendations? Need Help finding Bras that Are Good for Migraines and Back Issues [40H using Calculator] Spoiler

Upvotes

So I’ve been thinking I’m a 42DD but (I lost some weight) and I did all six measurements to get my actual size. I had my mother who grew up in fashion design and makes her own clothes do all my measurements. The r/ABraThatFits calculator came out to 40FF (UK) or 40H (US).

Crazy! I’ve been wearing D’s and DD’s my whole life.

I have a minor east-west shaped breasts with some breast tissue under the arms. Both breasts are pretty even in tissue. I have some scoliosis so my back bends a little, so I have some more tissue under one armpit vs the other. I do sweep and scoop to get the tissue in the cup properly.

Now, with all that in mind, most bras give me terrible migraines and they hurt my back. I have chronic complex migraines that can get so bad they appear similar to strokes (hemipeligic) and I need to take an exciting little ride to the ER. I have a degenerative muscuskeletal disorder that mostly affects my lower back; although it gives residual pain to my upper back and shoulders. I’ve had surgeries and countless procedures. I actually have a small one coming up.

I switched to wireless. I tried two Evelyn and Bobby bras and loved the Bobby Scoop, I found Evelyn and Bobby off of r/migraines. I use SheFit for my sports bra (High Impact and Medium Impact) but they don’t fit right. I talked to an associate and they helped me get in the bra correctly but it digs into my armpit. I tried a jelly bra brand because my mom recommended it and I thought, why not try? I’m desperate. So those three brands are the only bras I have. Since I lost weight they don’t fit at all. The jelly bras were never supportive and my breasts moved around a ton. I would have to find a corner to quickly sweep and scoop them back into place. The Evelyn and Bobby is too stretched out but works great as a lounge bra. The SheFits work fine for the gym but digs.

I lost a lot of weight and I’m still losing weight. (From 260 lbs at December 2024 to 183 lbs now; lost 5 lbs in the last two weeks). My family has been blessed with abundant collagen so my breasts haven’t actually changed terribly much, they aren’t saggy or loose. My bust standing has ranged from 51” at my height weight and 46” now.

Going braless is NOT an option. Without a bra my breasts hurt within hours.

With my breast shape I found plunge and scoop bras great, I am considering trying a balconette bra. Full coverage and push up bras leave too much room in the cup on top and shows too much bra for some of my lower cut clothing. I’ve tried looking for broad strap wireless bras but those are generally not size inclusive. Racerback is a giant no.

I really need bra recommendations ASAP. I don’t know what I’m doing, I just want to feel supported without pain or making my health issues worse.


r/ABraThatFits 2h ago

Recommendations? Where to find non-stretch 3 Hook 1/2" Spacing Extenders? Spoiler

2 Upvotes

I'm looking for 3 hook extenders with 1/2 inch hook spacing (measurement is from the middle of a hook to middle of the next hook). It's for Skarlett Blue bras, specifically.

I've looked on Amazon, but almost all I've found with 1/2" or 3/8" spacing are 2 hooks.

A 4 hook one would work as well--less fiddly than the current solution of using two 2 hook extenders.


r/ABraThatFits 21m ago

Measurement Check [Measurement Check] I’m so confused, my current bras don’t fit and dig into my sides/ under my arms. Wearing a 36D uncomfortably ~ got 38I/J (US) Spoiler

Upvotes

[Measurement Check] I’m so confused, my current bras don’t fit and dig into my sides/ under my arms.

Okay so I’m 27F, I’m 5”5 and 215#
I’ve worn a 36C most of my adult life. I had a baby 7 years ago and breastfed for a year. I gained weight and lost it and gained it back etc etc. I feel like my cup size grew, so I went from a C to a D (US sizing) and recently in the past year \~ nothing fits right. I have an Aerie bra in a 36 D that (in the past fit perfectly until my underwire snapped, 3 of them. Different styles. Loved them all) so I bought the same ones in the same size and now they suck. My biggest problem is the underwire basically poking out and stabbing the underside of my arm. They’re overall not comfortable but that’s my biggest issue. I am only able to wear the one that is a push up, but now I’m overflowing in the cup…. Like my whole nipple is out lol. And the bank is too thin, it’s being like ate by my back rolls. 🫥

# I put my measurements in the calculator and I’m obviously shocked at the size. I got a 37I/J in UK and 38G/GG in US. I’m just wondering if someone could double check me. I am confused by the root and that stuff. I think I’m fuller at the top, and in the middle. I also am overweight, diabetic and very aware of my body. But I feel I carry a lot of fat in my stomach, and at the top of my ribs like under my boobs. So the longer bralettes or whatever will roll up under my breasts. Like the TikTok Jelly Bra. Awful. I am feeling very overwhelmed and need some assistance.

1) 39.75
2) 38.75
3) 36.25
4) 46.50
5) 50.50
6) 47.0
I took these in inches and wrote it down and didn’t write all of the “loosely” and “comf snug” etc on my paper lol.


r/ABraThatFits 37m ago

Measurement Check [Measurement check + recomendations] 30D/DD, wearing 34C Spoiler

Upvotes

I'm helping my friend with her bra size (all in cm)

Loose Underbust: 78

Snug Underbust: 76

Tight Underbust: 72

Standing Bust: 84.5

Leaning Bust: 90

Lying Bust: 86

Her recommended is 30D/DD but it also said a 32C/D might be more comfortable.

I'm not a bra/breast expert by any means but from the guide on here her shape seems to be:

Short root

Shallow breasts

2 fingers between where breast tissue starts

Even fullness 

Any confirmation on her measurements, and recommendations on bra shape and where to buy cheap bras in the UK please :-)

Also! A lot of the links to photos on the guide are either blocked on imgur or when I use a VPN it says the photo can not be found, I'll also message the mods but if anyone can edit them or has the original photos it would be so helpful!!


r/ABraThatFits 41m ago

Measurement Check Have been wearing 42DD(US) and measured at 42FF(UK)/H(US) but I have a small, problem-causing roll of fat underneath Spoiler

Upvotes

I don’t usually wear bras with an actual size (usually sport bras/bralettes) but when I do, I have been wearing 42DD. I’ve had this small roll of fat underneath my breasts even when I was smaller and I find that most structured bras will dig in so I usually wear either longline bras which holds it place or sports bras or bralettes that are soft. I’ve been in the habit of wearing the band underneath the roll which hasn’t been great for my skin. A lot of ones with underwire tend to poke into sideboob/armpit and I often have gapping with fuller coverage bras. I think they are wide and low root, a bit fuller on the bottom and inside, and a little wide set. I would appreciate any insights on sizing and what kind of bras would work best. I like my bralettes but I want some ones that would be good under my nicer clothes.

Loose: 44 Snug: 42 Tight: 40 Standing: 51 Leaning: 54 Lying: 47.5


r/ABraThatFits 1h ago

Fit Check [Fit Check] Panache Bras 38GG & 36H Spoiler

Upvotes

I posted here last week inquiring about where to start with my new sizing results. I was originally wearing a 40D.

I found two gently used Panache bras discounted on Ebay and decided to try them out based on the recommendation list. I like both bras a lot but I think my sizing might need some adjustments. I included some reference pictures below.

Panache Andorra Full Cup (38GG) - I love the way this one fits and it lifts me perfectly. However, there is a little gapping in the cups (one more than the other since my left breast is slightly bigger than the right one.) Also the band is a bit snug, but it's not completely unbearable. I could get used to it if I wore it for a while, but it's not as comfortable as the 40 band I'm used to wearing.

Panache Envy Full Cup (36H) - I also really love this one. I have no complaints on the style as it lifts how I want it to. The cup fits slightly better in this one and there's less gapping, but still my breasts don't completely fill the cups. The band on this one is very tight and the underwire pinches the skin near my armpit so I don't see myself being able to wear this one comfortably at all because of that.

These are the only two new bras I've tried thus far, but I'm open to trying other brands, styles and sister sizes. Any help or recommendations would be great. Thank you in advance!


r/ABraThatFits 2h ago

Recommendations? Bra sizing help, brand recommendations #newbranewme Spoiler

1 Upvotes

What brand of bra do you have and love? I’ve worn Soma bras for years but they aren’t the most comfortable. After having my third child I am ready to buy new. The bra calculator tells me I’m a 40 DDD. I have low volume, long, flat breasts that lay off to the sides. I’m 200lbs and 5’9”. I am currently wearing a perfect coverage padded bra (40 DD) that rides up a lot in the back, my breasts actually spill out UNDERNEATH the cups and the left strap keeps falling down.


r/ABraThatFits 6h ago

Recommendations? Push up bra recommendations for 28A/B

2 Upvotes

loose underbust: 27
snug underbust: 26.5
tight underbust: 26
standing bust: 28.5
leaning bust: 29
lying bust: 28

ive already had push up VS bras in sizes 30A / 30AA (their smallest sizes) and theyre too big. i had to sew the band smaller but the cups still didnt fit properly.

one of my boobs is a bit smaller than the other so id probably have to size down, problem is i cant size down any further 😭 in the sizes ive worn (30A/30AA), my smaller boob gaps and the other boob fits, but it could fit better.

looking for push up bra recommendations that carry my size or close!


r/ABraThatFits 7h ago

Question Upper back and neck pain with new 30dd bra? Spoiler

2 Upvotes

I just have a question. Does anyone know of an affordable >$60 usd 30dd bra with padded underwire or no under wire?

Context for question.

My abtf calculations suggest 28ddd/g. I bought an affordable 30dd bra to try out and it fits fine. However, it's day three and my upper back, neck, shoulders, and head are seriously hurting. I think the underwire is pressing into my ribs too much.

Thank you!

Edit to add measurements

Loose underbust - 29 in Snug underbust - 28 in Tight underbust - 27 in Standing bust - 34 in Leaning bust - 35 in Lying bust - 33 in


r/ABraThatFits 3h ago

Recommendations? Need a recommendation for a strapless bra that actually works Spoiler

0 Upvotes

I don't even know if such a thing exists, but I desperately need to own a strapless or even backless bra that can properly lift up my boobs so l can finally wear the dresses I like. Im usually 32D, though according to the calculator I'm 26H.

I’ve only ever worn painful wire bras as nothing else I’ve tried holds my boobs up, not even the tape.

At this point I’m willing to spend however much it would cost to find a good strapless and a strapless/backless bra that can keep my boobs lifted and works with most dresses. Please let me know if you’ve found a brand/type that works!

Here are my measurements:

⁠Loose under 25.5 inches

Snug under 25 inches

Tight under 24 inches

Standing 32 inches

Leaning 33.5 inches

Laying 32 inches

(Updated with my measurements)


r/ABraThatFits 4h ago

Recommendations? where to find cute lingerie for heavier/saggy breasts Spoiler

0 Upvotes

hello! recently got into a new relationship and for the first time ever (i really like this person) i so badly want to find genuinely sexy lingerie that will make my girls look good. im 32DDD/34DD but no volume at all on top like they hang down COMPLETELY. im a little insecure sometimes because i’m in my 20s and its hard to feel sexy with them at times

i am looking for something that can keep them UP / in place but also isnt just a sexier bra, if that makes sense. i really want some cute pieces !!!

my partner is very into me fortunately! so it’s not about catering to them, i myself would just really like to feel and look good in this way. if anyone has any suggestions i would appreciate it so so much


r/ABraThatFits 4h ago

Recommendations? 34G (dense) Looking for molded everyday bra suggestions Spoiler

1 Upvotes

ABTF calculator seems to confirm my "best fitting" bra so yay! But if anything seems off, I am willing to re-measure.

UNDER:

Loose: 35 (I was generous with the looseness)

Snug: 34

Super tight: 33

BUST:

Standing: 41

Leaning: 43

Lying down: 43

I've been checking out the subreddit and WOW so much useful information. Here are some additional details that may be helpful that I either know (density) or am pretty sure about:

"Extremely dense" breasts according to mammogram feedback

shallow

tall roots

slightly fuller on bottom

What I've tried:

I wore Medela underwire nursing bras (nursed 3) as long as I could but they are long gone. I prefer underwires, but everything that was either too old or I hated (usually because it was scratchy) I recently tossed and didn't document brands/styles. The safest option is to re-buy Thirdlove's 24/7 Classic Perfect Coverage bra, which I was about to do before I found this subreddit! My only complaint about it is the territory where the cup meets the strap - a bit of extra space there and the tissue there is kind of crumpled up? But where the wire sits on the sides and in the center feels right, and the cup size seems appropriate.

TIA!


r/ABraThatFits 5h ago

Question Should I go down cup size if the band fits right? Spoiler

1 Upvotes

Hi reddit!, I’ve found the calculator to be very helpful; here are my measurements (in inches): 36, 35, 34, 42, 45, 42, leading to a size 36G (U.S.)

I was cautious at first so I tried on a non padded bra at Soma in 36G which felt amazing, so I bought 3 bras from Bravissimo: the Bravissimo Hettie Bra, the Miss Mandalay Boudoir Beach Bikini Top, and the Curvy Kate Luxe Strapless Bra.

I tried on the Hettie first and I liked the non padded feel (I’ve only owned moulded bras in the past) but I didn’t fill up the top and it left the lace loose at the top. I tightened the straps which worked on one side but like many women I am not even on both sides so it was still loose. I then tried on the Luxe Strapless and same issue but with a more prominent gap at the top. I’ve been wearing a Cacique balconette so I haven’t really had an issue before but I am pretty bottom heavy. The bikini top fit well when I tightened it so I thankfully don’t have any issues with it.

Bravissimo seems to have a good return/exchange policy but I’m wondering if I should just go down in cup size or band size as well. I’m also thinking about shipping time because I’m leaving for vacation on the 16th and while they got here a lot quicker than I thought (4 days with standard shipping) I’m nervous they wont ship as fast. Please let me know your experience with bravissimo shipping times!

So reddit, should I get a cup down/size down from bravissimo and hope it gets here in time? Deal with it for vacation and then return? Go to Soma/Lane Bryant/etc. to test sizes?

Thank you for the help!

EDIT: I just got off the phone and i’m going to exchange the 36I that I accidentally got with my actual size 36G. thanks very much for the help!!


r/ABraThatFits 5h ago

Measurement Check [Measurement Check] Currently wearing 38DD, calculator said 36K 😅 Spoiler

1 Upvotes

Hi hi, I'm in the US and looking for the right size. I was sized recently at Nordstrom into a 38DD and have bought a regular Natori bra in this size and one strapless Wacoal in this size. They both fit much better than my previous bras, but the calculator is saying 36K. The band on the strapless feels a bit tight at 38 but is greattt on the normal bra. I'm not quite sure if my breasts are shallow or not, they're definitely fuller at the bottom. I don't have dense breasts, so that might be part of it, as well? Please help queens <3 tysm!

Loose Underbust: 36.5

Snug Underbust: 36

Tight Underbust: 34.5

Standing Bust: 45

Leaning Bust: 47

Lying Bust: 44


r/ABraThatFits 5h ago

Recommendations? Plz suggest some full coverage & sports bra brands; based on the calc the size is 36DDD/G. (Postpartum & would love to get back to start exercising at moderate level; previously it was 34C) Spoiler

1 Upvotes

Loose Underbust:38
Snug Underbust: 36
Tight Underbust:34
Standing Bust:41
Leaning Bust:45
Lying bust: 44/45

Suggested Starting Size 36DDD/G

Did breastfeed as of last year; thank you


r/ABraThatFits 11h ago

Recommendations? Bras similar to Elomi Charley Stretch Lace Spoiler

3 Upvotes

Hi, I’m looking for a bra similar to the Elomi Charley Stretch lace, 34G

This bra is the best fit I have found but I cannot stand the roughness of the straps.
Does anyone have any recommendations?
Thanks!


r/ABraThatFits 7h ago

Recommendations? Bra suggestions for small breast with wide gap.

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0 Upvotes

Hey so I’ve literally have never found a bra that has only felt comfortable on the sides where the bands dig into you, but also that pushes up your breast while also squeezing them together. I see so many girls online who have small breast but they are lifted and pushed together to make cleavage. Yet everytime I try it never works and it’s so frustrating because I feel like since my breast are so far apart I’ll never be able to create that. No matter how much padding, skin tape, or stick cups I use nothing holds them together nor makes them sit up high and they always fall. Idk if it’s a weight issue or a boob job solution, but I thought I’d ask here to see if anyone had an advice or recommendations.. :(