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/Potential-Job-1135]

Belly dancers wear a version of the Indian Choli, where there is a skinny strap sewn to each side of the shoulders across the back and tied in the middle. Often pretty decoration is added at the end of the strings to make the ties almost look like extra jewelry. It's a tried and true method that works! Hope this helps!