NWT & still have the box, only tried on to take the pictures shown. It’s one size, it’s a very stretchy mesh fabric that can fit most. For reference, I’m usually an XS but someone else I know who’s a M has the exact top in a different color and it looks stunning on her, I just wouldn’t recommend for someone over a DD if you wanted more support. Bought for an event I can’t go to anymore, price is negotiable!