Adjustable Corset Black Bra XL?

Adjustable Corset Black Bra XL? This is marked 4XL but that’s not in American sizes. My mannequin is a XS/S and I did pin it on the back to fit it and it was still big. I’m thinking for someone that has some cleavage and curves for sure. Use the measurements I gave in pics for proper fit I used the first hooks (biggest size) to give the maximum fit. It does stretch a bit too no underwires doesn’t look worn like new.