Size Chart:(Product Measurement)
8Y:Straps Length:11.3IN,Bust:26.2IN,Shoulder:12.6IN,Waist Size:23.2IN,Length:27.2/19.9IN
9Y:Straps Length:11.5IN,Bust:27.4IN,Shoulder:12.6IN,Waist Size:24.4IN,Length:28.5/21.1IN
10Y:Straps Length:11.8IN,Bust:28.5IN,Shoulder:12.6IN,Waist Size:25.6IN,Length:29.9/22.2IN
11Y:Straps Length:12.1IN,Bust:29.7IN,Shoulder:12.6IN,Waist Size:26.8IN,Length:31.3/23.4IN
12Y:Straps Length:12.4IN,Bust:30.9IN,Shoulder:12.6IN,Waist Size:28.0IN,Length:32.7/24.6IN
This data was obtained from manually measuring the product, it may be off by 1-2 CM