Vintage Cobalt Blue Bathing Suit See Measurements for size

Vintage Swim suit, with buttons, label says size 10, but this is vintage, and my mannequin usually wears a size Small or 4 (it does look like there is some extra space in the suit in the butt area, but see mannequin) but for references, I have added the tape measure. I don’t know the age or decade. I don’t see stains but there is an occasional little thread (I’m not going to pull or cut) This would be so fun for a vintage beach photo shoot idea! Or just for someone who loves a gorgeous classic look. She cute.