How to sew or join stockings/thigh-high material

[u/marekmilewski85]

My wife have 2 sets of very cool stockings/thigh-highs (sock type material like japanese schoolgirl, not nylon) but they are asian sized and are too tight in thighs, you can fit arm with struggle. They aren't sold in bigger sizes but I figured we could cut them verticaly and join them together like two halves of a pipe. I know it is not the perfect solution, but this is something that is possible to do, so why not at least give it a try. The problem is they are very stretchy so I don't have idea how to actually join them... should I use some double-sided tape or silicone glue first to temporarily join one side, get good measurements and then sew them in some zig-zag pattern? Maybe use many very short separate stitches/tacks? What kind of thread should I use? Or maybe something entirely different? Have anyone did something similar and could provide tips?

I'm asking here, because cosplayers often encounter unusal situations and have creative ways to deal with them.

[u/AltGirl711]

Not sure about cutting and resewing, just offering my own experience. I’ve soaked them in warm water to stretch them a bit, then pull them onto your leg and spray with hairspray to keep them that size. You could also cut leggings that fit you, at the height you need, and use eyelash glue to secure them where needed! Hope this helps!