40DD during pregnancy and the largest size fits but is a little snug, not sure how well it'll fit once my milk comes in. Nice lift and support, gives me the best shape under clothes than any other non underwire nursing bra I've tried so far, but after the first wash it got some weird blue stains all over it (I washed in cold with Tide Free and Clear and didn't wash with any darks), so it's no longer cute but I'll still have to wear it for now.