This bathing suit is SO cute and shiny! I'm usually a Large in all FES clothes, but when I saw the note about sizing up, I decided to get both a Large & XL. The XL fit wayyyy better on my waist (not so tight) and on top since I have a large chest. I'm 5'3 / 150 lbs with a 34DD chest and 29-30 inch waist. Its super comfortable too, got it for my trip to Miami - PERFECT!