Size Guide: XS fits a UK 6 size, S is an 8, M is a 10, L is a 12 and XL is a 14.
I advise to size up as they are small fitting. There is good stretch in the leg but there is no give in the waistband. I wear the size medium and I'm normally and 10 in jeans.
Sonya Heslin wears the size Large.