Size Chart:（Product Measurement）

8Y:Bicep Length:11.6IN,Bust:30.7IN,Cuff:6.0IN,Length:18.1IN,Shoulder:12.0IN,Sleeve Length:18.5IN

9Y:Bicep Length:11.9IN,Bust:31.9IN,Cuff:6.1IN,Length:18.9IN,Shoulder:12.5IN,Sleeve Length:19.3IN

10Y:Bicep Length:12.2IN,Bust:33.1IN,Cuff:6.3IN,Length:19.7IN,Shoulder:13.0IN,Sleeve Length:20.1IN

11Y:Bicep Length:12.5IN,Bust:34.3IN,Cuff:6.5IN,Length:20.5IN,Shoulder:13.5IN,Sleeve Length:20.9IN

12Y:Bicep Length:12.8IN,Bust:35.4IN,Cuff:6.6IN,Length:21.3IN,Shoulder:13.9IN,Sleeve Length:21.7IN

This data was obtained from manually measuring the product, it may be off by 0.39-0.79 IN