Old Navy returns?

MrsWhiteonWhiteSt

I love my old navy bathing suit but I think I need it 1 size smaller. (yay!)

My ON does not have swim in store yet for adults and when they do it's usually a joke of a selection. I figured I could just send it back and do an even exchange. I think you have to pay! Am I wrong? It looks like you print out a pre-paid label and then they charge your c/c...