Size Chart(Product Measurement):

Tops:
8 Years: Length: 11.2", Sleeve Length: 5.5", Bust: 31.1", Cuff: 7.5"
9 Years: Length: 11.7", Sleeve Length: 5.6", Bust: 32.3", Cuff: 7.7"
10 Years: Length: 12.2", Sleeve Length: 5.7", Bust: 33.5", Cuff: 8.0"
11-12 Years: Length: 13.3", Sleeve Length: 6.0", Bust: 35.8", Cuff: 8.4"

Shorts:
8 Years: Length: 11.0", Waist Size: 20.5", Hip Size: 32.7", Thigh: 20.9"
9 Years: Length: 11.3", Waist Size: 21.1", Hip Size: 33.9", Thigh: 21.6"
10 Years: Length: 11.5", Waist Size: 21.7", Hip Size: 35.0", Thigh: 22.3"
11-12 Years: Length: 12.0", Waist Size: 22.8", Hip Size: 37.4", Thigh: 23.7"