I ordered the smallest size to fit a 4-5 year old child. These socks have very good thickness and bright colors. The only problem is that they go down to her crotch! Personally I think they would be fine as knee socks for a 9 year old. Maybe 11 years. In any case, they are too big for us.
Amazon Essentials Little Short Sleeve Leotard Girls' Clothing for Active
61 Review
Thermajane Girl's Cozy and Comfy Thermal Underwear Long Johns Set with Fleece Lining
46 Review
Tommy Hilfiger Girls Crop White Girls' Clothing
54 Review
Pack Athletic Performance Basketball Drawstring Girls' Clothing
48 Review