So I ordered a M/L because I've been seeing how this product runs small. I'm 5'9, 125 lbs, and a 32C . It fits my chest just fine, the arms are a little short on me but I can easily push them up to be mid length . When I opened the package and put it on, the top already had a loose thread on the wrist. Not to mention the fact it took over 2 months to receive the product itself. The top itself is still really cute.