I bought a cotton cover-up at victoriassecret.com. They have great suits and coverups in all sizes. I don't know how old your daughters are, but I bought a small and I'm 5 foot three 120. They aren't like lingerie or anything. I always saw some comprable ones at target.
Aventura Spa Palace-04/25/04
Rccl Explorer of Seas-04/17/05