S   M   L
Waist 13" 14" 15"
Hip 20" 21" 22"
Rise 13.5" 14" 14.5"
Length 15" 15.5" 16"

*Model is 1.64m, UK 6 and wears size S

There's allowance at the waist/hip. You may stick to your usual size for a relaxed fit or size down for a slimmer fit.