MEASUREMENTS 

The correct size to choose will be the Shoulder to Ankle length that corresponds with that of your girl. Sizes are divided into age groups (see below). To ensure a perfect fit, check which age group corresponds closest to your girl's measurements. The chart below shows the measurements for each size group. The pictogram shows you how to take the measurements. 
WAIST MEASUREMENT ALWAYS TO BE TAKEN 3-4CM ABOVE BELLYBUTTON.