Measurements are taken from point to point of product, unstretched and stretched. Multiply measurements of bust and waist for circumference. 

Size Bust   Waist Length
XS 11 - 15inch | 28 - 38cm 13 - 16inch | 32 - 40.5cm 45inch | 114.3cm
S 12 - 16inch | 30.5 - 40.5cm 14 - 17inch | 35.5 - 43cm 45.5inch | 115.5cm
M 13 - 17inch | 33 - 43cm 15 - 18inch | 38 - 45.5cm 46inch | 116.8cm
L 14 - 18inch | 35.5 - 45.5cm 16 - 19inch | 40.5 - 48cm 46.5inch | 118cm
XL 15 - 19inch | 38 - 48cm 17 - 20inch | 43 - 50.5cm 47inch | 119.3cm