Size Chart:(Product Measurement)
8Y:Straps Length:10.7IN,Bust:23.6IN,Length:28.3IN,Waist Size:30.7-25.2IN
9Y:Straps Length:11.1IN,Bust:24.8IN,Length:29.5IN,Waist Size:31.9-26.0IN
10Y:Straps Length:11.4IN,Bust:26.0IN,Length:30.7IN,Waist Size:33.1-26.8IN
11Y:Straps Length:11.8IN,Bust:27.2IN,Length:31.9IN,Waist Size:34.3-27.6IN
12Y:Straps Length:12.1IN,Bust:28.3IN,Length:33.1IN,Waist Size:35.4-28.3IN
This data was obtained from manually measuring the product, it may be off by 0.39-0.79 IN