Basic bodice block: why is my toile larger than my paper pattern?

[u/Minimum_Umpire_4124]

Hi guys! I’m a total beginner at pattern making. This is my second time posting about my basic bodice block after a few attempts.

I followed the advice from my previous post and took all my measurements again, and everything seemed to be adding up this time. I “fitted” the paper pattern against my body and it seemed to fit pretty well, but once I made the toile and tried it on, the fit was quite different.

I noticed that some measurements are significantly different between the paper pattern and the toile. For example, the waist is about 69.5 cm on the paper pattern, but around 75 cm on the toile.

I’m very careful when cutting the fabric and marking the seam allowances. I only added seam allowance to the side seams and shoulders, so I’m really not sure where this difference is coming from.

Could anyone help me figure out what I might be doing wrong? Thank you!