SIZE 4 - 25 Inch Waist - 63.5 CM
SIZE 6 - 26 Inch Waist - 66 CM
SIZE 8 - 27 Inch Waist - 68.5 CM
SIZE 10 - 28 Inch Waist - 71 CM
SIZE 12 - 30 Inch Waist - 76 CM
SIZE 14 - 32 Inch Waist - 81 CM
SIZE 16 - 34 Inch Waist - 86 CM
SIZE 18 - 36 Inch Waist - 90.5 CM
SIZE 20 - 38 Inch Waist - 95.5 CM
SIZE 22 - 40.5 Inch Waist - 101.5 CM
For further info please see here for the complete size guide.
For USA girls, your size converted will be a UK size minus 2 (if you wish for me to convert it for you please add all your sizing details in the notes section of your order. For AUS girls your size stays the same.