Size Chart(Product Measurements):

7 Years: Shoulder: 10.9", Length: 11.7", Sleeve Length: 5.2", Bust: 24.4", Cuff: 8.7", Bicep Length: 8.7"

8 Years: Shoulder: 11.4", Length: 12.2", Sleeve Length: 5.3", Bust: 25.6", Cuff: 9.1", Bicep Length: 9.1"

9 Years: Shoulder: 11.9", Length: 12.7", Sleeve Length: 5.5", Bust: 26.8", Cuff: 9.4", Bicep Length: 9.4"

10 Years: Shoulder: 12.4", Length: 13.2", Sleeve Length: 5.6", Bust: 28.0", Cuff: 9.7", Bicep Length: 9.7"

12 Years: Shoulder: 13.3", Length: 14.3", Sleeve Length: 5.9", Bust: 30.3", Cuff: 10.3", Bicep Length: 10.3"