Size Chart (Product Measurements):

8 Years: Belt Length: 35.4", Bicep Length: 10.8", Bust: 29.1", Cuff: 6.7", Length: 28.7", Shoulder: 11.4", Sleeve Length: 18.7", Waist Size: 24.8-29.1"

9 Years: Belt Length: 35.4", Bicep Length: 11.1", Bust: 30.3", Cuff: 6.9", Length: 30.1", Shoulder: 11.9", Sleeve Length: 19.5", Waist Size: 25.6-30.3"

10 Years: Belt Length: 35.4", Bicep Length: 11.5", Bust: 31.5", Cuff: 7.0", Length: 31.5", Shoulder: 12.4", Sleeve Length: 20.3", Waist Size: 26.4-31.5"

12 Years: Belt Length: 37.8", Bicep Length: 12.1", Bust: 33.9", Cuff: 7.3", Length: 34.3", Shoulder: 13.3", Sleeve Length: 21.9", Waist Size: 28-33.9"