Size Chart:(Product Measurement)
8Y:Straps Length:6.6IN,Bust:29.1IN,Length:29.9IN
9Y:Straps Length:6.9IN,Bust:30.3IN,Length:31.5IN
10Y:Straps Length:7.1IN,Bust:31.5IN,Length:33.1IN
11Y:Straps Length:7.3IN,Bust:32.7IN,Length:34.6IN
12Y:Straps Length:7.6IN,Bust:33.9IN,Length:36.2IN
This data was obtained from manually measuring the product, it may be off by 0.39-0.79 IN