Bathing suit trouble

Janet

I got a high waisted bottom at old navy and 2 tops but I feel like it’s making me look thicker than I am I’m not used to wearing 2 piece I really only use 1 pieces it’s almost my first time I think actually getting one. Should I just return them 🤷🏻‍♀️🤷🏻‍♀️🤷🏻‍♀️