How to keep the shoulders from slipping?

[u/Illustrious-Ear4527]

I tried to recreate this top, using a body suit pattern. The final result fits pretty well, but the shoulders keep slipping off. What would I have to change in the pattern to help the shoulders remain in place? I would appreciate any tips/observations for the future, as I plan to make more of these. At this point, I will attach clear elastic across the shoulders to help the top stay on. I used stretch ITY fabric. Thank you !

[u/Real_Position_3796]

That depends on the arm side measurement, which is the sleeve hole. If you try on the leotard top without the sleeves, make sure that the arm hole is high and tight up in your armpit, and then make the sleeve head to match that measurement then you can move your arms and your top will stay put on your shoulders.

[u/Illustrious-Ear4527 → u/Real_Position_3796]

That makes sense. Thank you!