This suit was a little more snug than I expected (I can't wear the bottoms at all but I have black ones that go with it so not a big deal to me). I'm usually a size small in  bathing suits and that's what it looked like I should be according to the chart. I should probably have sized up but the top is still an ok fit so I didn't worry about exchanging it. If I order another I'll opt for the medium.