I’m 5’4 and 104lbs, I got the smallest size (S/M). I was expecting it to be super tight (like the reviews said) but it wasn’t on me… it fit how I would’ve expected an S/M to fit me. Overall cute, but the bottoms kind of looked like diaper with the amount of scrunched up fabric on the elastic around your legs. I made it work by just hiking it up and buying some simple black shorts to put over it and then the accessories generally covered the excess fabric.