Got this patchwork plaid swimsuit in both styles to mix and match and it also comes in pink in another style. I wear a small in the top and both an XS and S with in the bottom so ultimately it comes down to coverage. I have a little more coverage in the small. Such good quality and swipe so cute! The denim shorts are a dream! Just roomy enough, great length, and elastic waist in the back!!! I have them in 4 colors, wearing an XS. #americaneagle #beachvaca #swimmie #bikini #denimshorts #summer #LTKunder50