Sizing:

XS -8  S -10    M -12-14    L 14-16   XL 18    XXL - 20-22     3XL 22-24 

Actual garment chest size when laid flat, armpit to armpit (across the chest)

XS -  47cm  S - 50cm  M  - 53cm  L - 56cm  XL - 60cm  XXL - 64cm  3XL - 68cm 

Garment length:

XS - 68cm  S-70cm  M-72cm  L-74cm  XL -76cm  XXL - 78cm  3XL - 80cm