We bought these online and according to the size chart my daughter measured 6x/7. Needless to say they are too big for her so the sizing is not exact and you should probably go down a size. I washed the pants after they first tried them on and we adjusted the waist to fit them and the waistband came undone in the middle making them unusable unless you take a safety pin and stick it there over the elastic where you need them. the elastic band does not slip into the pants. The pants themselves appear to be of good quality.