Measurements are approximate and taken while laying flat across the front. Not doubled.
small: bust = 19.5"; length = 25"
medium: bust = 21"; length = 25.25"
large: bust = 22.5"; length = 25.5"
x-large: bust = 24"; length = 26"
xx-large: bust = 25"; length = 26.5"
xxx-large: bust = 26"; length = 27"