Americana Paisley Tankini Top

Such a well made tankini top with intricate details like stitching and metal stars at the ends of the ties. It’s a very flattering cut and has a shelf bra inside for support. It does appear to run little small possibly because the sizing doesn’t really make sense for a bikini top. I would assume it to be small/medium/large or A/B/C/D etc but a number size is odd. I typically wear a Large for a regular bikini top or D/DD but for tops I would be a M or 6/8, for reference.