I got this costume last minute and the only size left was a small and i’m usually a medium lucky for me It fits. it’s sort of stretchy just a tad bit to short however I am 140lbs and i’m 5’3 i’m built like a letter P. if your dragging a wagging i’d say stick to your normal size or go up a size. Not very comfortable especially around the neck area but it is cute i cannot deny that!!