I really wanted to love these bottoms, but like the other reviewer I find that they ride up. I bought the solid bottoms last year, and I think this print version is somewhat smaller in back than the solid. It sucks, because I really like the print and the quality of the material, but I'm not into the cheeky look that everyone is selling right now, and I hate having to constantly readjust my bottoms so I don't have a wedgie. I still wear them for chilling by the pool, but they're not my go-to for a more active day at the beach. For reference I'm 5'4" about 120lb with 37" hips and I bought a small. Medium would definitely be too big - as it is, the small gaps some at the waist, but that's a problem I'm used to as a small girl with a booty.