I wear a plain black one peice with a deep v neckline, a halter neck (though I don't really like the halter, the knot where I tie it always hurts and if I wear it all day, I get a headache and a sore spot from it). It has ruched fabric on the tummy with really tight fabric under it, so it helps suck in my tummy a bit. I don't bother with singlets or boardies, cause I feel like I am fully dressed and swimming in clothes if I wear all of that on top. People can suffer the atrocities of all that is me- cellulite, lilly-white skin, tubby rolls and all, before I will swim fully clothed. If they don't like it, don't look at me!