I ordered a 38DD, as that was the only way the sizing was based. So you'd think that it would fit a larger person (I'm an 18), but no. I couldn't get this thing past my knees. I gave it to my mother, who's a size 12. She couldn't fit into it either. I'm not sure what kind of person is supposed to be able to wear this thing but clearly they need to find a different way to base the sizing other than the bra.