Size Chart(Product Measurement):

8 Years: Bicep Length: 9.8", Bust: 27.6", Cuff: 5.9", Length: 17.3", Shoulder: 10.6", Sleeve Length: 23.6", Waist Size: 27.0"

9 Years: Bicep Length: 10.2", Bust: 28.7", Cuff: 6.1", Length: 18.1", Shoulder: 11.1", Sleeve Length: 24.5", Waist Size: 28.1"

10 Years: Bicep Length: 10.5", Bust: 29.9", Cuff: 6.2", Length: 18.9", Shoulder: 11.6", Sleeve Length: 25.4", Waist Size: 29.3"

11-12 Years: Bicep Length: 11.1", Bust: 32.3", Cuff: 6.5", Length: 20.5", Shoulder: 12.5", Sleeve Length: 27.1", Waist Size: 31.7"