I wear this shirt to swim in.....http://www.landsend.com/pp/ShortSle...t&origin=search

Since it's a men's, it has no bra, but I just wear a bra under it. I use a pair of swim shorts from the same place.

I've gone to the pool at my highest weight. I certainly didn't feel good or comfortable, but I went anyway, and going is 90% of the battle. Once you're there, all you can do is swim!

Good luck.