Size Chart(Product Measurement):

Tops:
8 Years: Shoulder: 15.2", Length: 15.2", Sleeve Length: 3.8", Bust: 30.3", Cuff: 11.2", Bicep Length: 11"

9 Years: Shoulder: 15.7", Length: 15.9", Sleeve Length: 4", Bust: 31.5", Cuff: 11.5", Bicep Length: 11.3"

10 Years: Shoulder: 16.3", Length: 16.7", Sleeve Length: 4.1", Bust: 32.7", Cuff: 11.8", Bicep Length: 11.6"

11 Years: Shoulder: 16.9", Length: 17.5", Sleeve Length: 4.3", Bust: 33.9", Cuff: 12.1", Bicep Length: 11.9"

12 Years: Shoulder: 17.5", Length: 18.3", Sleeve Length: 4.4", Bust: 35", Cuff: 12.4", Bicep Length: 12.2"

Dresses
8 Years: Length: 29.9", Waist Size: 29.9", Hip Size: 25.6", Thigh: 14.9"

9 Years: Length: 31.3", Waist Size: 31.1", Hip Size: 26.8", Thigh: 15.6"

10 Years: Length: 32.7", Waist Size: 32.3", Hip Size: 28", Thigh: 16.3"

11 Years: Length: 34.1", Waist Size: 33.5", Hip Size: 29.1", Thigh: 17"

12 Years: Length: 35.4", Waist Size: 34.6", Hip Size: 30.3", Thigh: 17.8"