[This review was collected as part of a promotion.] 34B. This bra is awesome. Thin, soft, feels like a bralette but will give you a little more shape than a bralette. You literally won't feel it on. The lacey detail isn't ideal though, under a tanktop or anything thin/tight where the lace texture will show through. which is a bummer. but when it's not visible, this is my go-to bra.