Size Chart:?Product Measurement? 8Y:Bicep Length:11.8IN,Bust:31.5IN,Cuff:11.4IN,Length:20.1IN,Shoulder:13.4IN,Sleeve Length:5.8IN 9Y:Bicep Length:12.1IN,Bust:32.7IN,Cuff:11.7IN,Length:20.9IN,Shoulder:13.9IN,Sleeve Length:6.0IN 10Y:Bicep Length:12.4IN,Bust:33.9IN,Cuff:12.0IN,Length:21.7IN,Shoulder:14.3IN,Sleeve Length:6.1IN 11-12Y:Bicep Length:13.1IN,Bust:36.2IN,Cuff:12.7IN,Length:23.2IN,Shoulder:15.3IN,Sleeve Length:6.5IN 13-14Y:Bicep Length:13.7IN,Bust:38.6IN,Cuff:13.3IN,Length:24.8IN,Shoulder:16.2IN,Sleeve Length:6.8IN This data was obtained from manually measuring the product, it may be off by 1-2 CM