Marvel Sequin Corset Top I would say fits a cup size 34DD well as that is my bra size and this fit me well but there is no official size on the item. It is adjustable so could be made for a universal fit best fitting medium/large with a C-DD Cup. Worn a few times, still in great condition and a super cute piece! Marvel-branded sequin bustier with structured cups. Centered star appliqué on the chest. Vertical red and white sequin stripes down the body. Thin adjustable straps.