NWOT ASOS ribbed thong bodysuit, sz S-M

NWOT ASOS ribbed thong bodysuit. Pink w/ adjustable spaghetti straps & 2 buttons that snap together at crotch. I'm guessing at the size, but I'd say S-M. I got this from another posher & unfortunately it's too big on me. The size tag was cut out when I received it, but a S-M would fit it best.