Based on other reviews, I ordered 1 size larger than normal and it just barely fits, but it is still comfortable.  A large will fit a B cup, but if you have a C cup you will probably need an XL or you will be showing a lot of cleavage.

I''m keeping this suit because I like the bottoms.  I am a 34 B and always wear a small.  I got the medium and it was super tight the first time I put it on.  It is starting to stretch out.  If you are large chested do not order this suit.  The bust area is very narrow in cut.

The design and quality  are great.  I normally wear size XS top but this time, I can wear size S instead.  The straps are a little bit shorter than other products. Also, my rib cage is kind of wide than other 5 feet tall girls.. I didn''t have to exchange it or anything but next time I shop these ones, I will get S instead of XS.

if you are a 36c you need the xl to fit

I was a bit nervous at first purchasing the top worried that the small would be too small. When I first tried it on it was a bit tight, but after swimming for a week or so I'm glad I bought a tighter fit. I have a pretty small chest (B cup), and it fits perfectly. I love the tan lines, and everything stays in place when I swim laps.

When it came in the mail and I unwrapped he packaging, I was like, holy cow! How in the world is this tiny little top supposed to fit? So i tried it on and it fit, it covered, but i was worried that while streamlining it would streamline down to my stomach or something. I took a chance and wore it to the pool. The top DID NOT move! I was shocked. I have tiny little boobies so maybe it worked out to my advantage. I''m at 32 B, 5'' 9", 135 lbs. most of my fat goes to my mid section so my ribs are skin and bones, but I feel like my rib cage is huge. Hopefully that information will help someone decide their size. Oh, I got a small in both the top and the classic bottoms that go with it in pink! It''s a little snug but it stays put in the water. as far as the bottms that go with it, i had to tighten the string a little after about 30 min of lap swimming and that seemed to work:)