Measurements are approximate and taken while laying flat across the front. Not doubled.
small: bust = 16"; waist = 15.5"; length = 38"
medium: bust = 17"; waist = 16.5"; length = 39"
large: bust = 18"; waist = 17.5"; length = 39"
x-large: bust = 20"; waist = 19"; length = 41"
xx-large: bust = 21"; waist = 20"; length = 42"
xxx-large: bust = 23"; waist = 22"; length = 42"