Measurements are taken from point to point of product. Multiply measurements of bust for circumference. 

Size Bust    Length
XS 18inch | 45.8cm 17inch | 43.3cm
S 19inch | 48.3cm 17.5inch | 44.5cm
M 20inch | 50.8cm 18inch | 45.8cm
L 21inch | 53.3cm 18.5inch | 47cm
XL 22inch | 55.8cm 19inch | 48.3cm