S   M   L
Bust 16-16.5" 16.5-17" 17-17.5"
Waist 13-13.5" 14-14.5" 14.5-15"

Length (exclude straps)

10" 10.5" 11"
Length  (include straps) 15" 15.5" 16"

*Model is 1.70m, UK 4/6 (PTP 15", Waist 11.5") wears size S

If you are in between size for bust/waist, it is best recommended to size down as there's allowance.

*In between sizes refers to your measurements falling between 2 sizes, example size S & M.