Mystic Bay Size girls 9/10 bathing suit

I want to say it’s women’s, the way it is shaped. However, it is tiny and when I pull it up on me, it’s kind of short. And I can fit into A size 9/10 regularly unless it’s too big, but never this small. I am also 4’11 so seeing 9/10, I expected it to go up A bit further above my breast but it did not so I’m going to say this is za girls 9/10 or A better size 00 in women. Love the colors and love the high waist, but does not fit. Nylon 82% 18% Spandex