Size Chart:(Product Measurement)
8Y:Straps Length:10.7IN,Bust:24.8IN,Length:26.8/19.3IN,Waist Size:22.4IN
9Y:Straps Length:11.1IN,Bust:26.0IN,Length:28.1/20.5IN,Waist Size:23.6IN
10Y:Straps Length:11.4IN,Bust:27.2IN,Length:29.5/21.6IN,Waist Size:24.8IN
11Y:Straps Length:11.8IN,Bust:28.3IN,Length:30.9/22.8IN,Waist Size:26.0IN
12Y:Straps Length:12.1IN,Bust:29.5IN,Length:32.3/23.9IN,Waist Size:27.2IN
This data was obtained from manually measuring the product, it may be off by 1-2 CM