Odina Surf bikini bottom

Please read description. Size small Odina bikini bottoms but they run really really small. More like an XS! I'd really like the same bottoms in a medium or something similar with the scrunch butt. Bought from another site. Person claimed they were NWT but when I received them they had tiny marks on them but not noticeable at all when worn. Great brand just wish they fit! Great price for these bottoms! Third picture is next to an iPhone case to show how tiny they are!