I ordered a medium, then a small, all too big! It just doesn't fit or stay up on breasts. Maybe an extra small was the winner but i lost interest. 36C size medium.

I took a shot after all negative reviews. I'm 120 lbs wearing size 34B. I'm a Small but I ordered an XS based off reviews saying it runs big. The fit around was great. The issue was the bust cups. It has NO SUPPORT and the straps seem as if someone stretched because they literally fall off the shoulders!