Im worried about back fat in a bikini!?

I am not fat. I have no stomach issues. I am only worried about the folds on my back. Ive been searching for a two peace with a very very thick strap and i cant find one! Link me to one please. Or if you cant. do you have any solutions? I have 3 days exactly before the big trip to the river. And I want to solve this issue. A bikini that covers it would be nice. Ill buy some from Victoria Secret, Forever 21, Delia's. Anything that is not too expensive.