S  M L
PTP 16" 17" 18"
Waist 13.5" 14.5" 15.5"
Length 16" 16.5" 17"

*Qing Wen (in Spring Abstract) is 1.68m, UK 6 (PTP 15.5", Waist 12.5") and wears size S.
*Audrey (in Yellow Floral) is 1.58m, UK 6 (PTP 15.5", Waist 12.5") and wears size S.

If you are in between size for PTP/Waist, it is best recommended to size up.

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