Brand new wrap dress, 100 % Pima Cotton. Had pockets, machine washable, cold water. Measured flat, the size M pit to pit- 19 1/2 inches. Natural Waist- 15”. Length 36 inches. This is a wrap dress so dress should have wiggle room and expand a little bit. A Draper James M is the equivalent of a size 8/10 The S size is equivalent to a 4/6 . The Small measures flat pit to pit 18”, waist 14 3/4” and length 40”