Excuse my gross towel and whatever. I ordered a medium. Im 54, 34DD, measurements are 36-29-36. The material of the romper is hella casual but it can look fancy if you tie it well and dress it up with the right jewelry. Everything stayed in place the whole entire night without any help from tape or whatever else people use to keep clothes from moving lol. I didn't wear a bra or stickies and yet, no nipslip all night!! Very flattering!!!