Where can i find reasonably priced but cute and appropriate junior tankinis for high schoolers?

Everywhere i look the bathing suits are either too skimpy, too y, highly priced, or just older people suits. I want to find a cute and appropriate bathing suit for a freshman and junior in high school who are very mature. Limited too and those kinds of little kid stores will not work... where else can i look? i feel like i have looked EVERYWHERE!