I bought the 4x/5x and im a size 20/22, i loved this item!!! This is my first skims purchase so i wasnt sure how good the quality or function would be, but now i really wanna buy like every item they make. The slip doesnt roll down at the top, and it doesn't ride up from the bottom, stays in place nicely. Gives me a nice smooth shape and looks great under my dresses....buy this, you wont regret it!