I usually wear items with a 68cm waist, but I gained some weight, but it still looks amazing! it’s a medium and fits really well. It will rise up like skirts do. it’s about mid thigh standing straight (I’m 4’11, about 137lb). The skirt feels really nice on. It’s thin, but not see your underwear thin. For those who are a little ditzy like me, the zipper goes in the back! will probably pair it with some fishnets. I love it. Anyone under 137lb or 70cm waist, I recommend a small depending on what you look like. The medium honestly fits perfectly and would’ve been too big without extra weight.