Size Chart:(Product Measurement)
8Y:Bust:26.8IN,Length:29.5IN,Straps Length:9.4IN,Waist Size:23.6-29.1IN
9Y:Bust:28.0IN,Length:30.9IN,Straps Length:9.8IN,Waist Size:24.4-30.3IN
10Y:Bust:29.1IN,Length:32.3IN,Straps Length:10.2IN,Waist Size:25.2-31.5IN
11-12Y:Bust:31.5IN,Length:35.0IN,Straps Length:10.8IN,Waist Size:26.8-33.9IN
This data was obtained from manually measuring the product, it may be off by 1-2 IN