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

Size Bust    Length
XS 18.5inch | 47cm 23.5inch | 68.8cm
S 19.5inch |49.5cm 24inch | 70cm
M 20.5inch | 52cm 24.5inch | 71.3cm
L 21.5inch |54.5cm 25inch | 72.5cm
XL 22.5inch | 57cm 25.5inch | 73.8cm