I also have this question. I am 5'2" 110 lbs. Everything seems to fit the "XS" profile aside from my waist size (22 inches??? Is that possible??? I am more like 27). We have (unisex) sizing XS to 4XL. Pitt student advice? It's fine if scrubs are fitted, but I really don't want them to be straining at the waist/hips.