Size small (4-6) fits my 3 year old well. She is 39 inches tall and weighs 32 pounds. We have room to stretch, but the tights don't interfere and don't hang down her legs. I expect to be able to use this size for the next 9 months of dancing and maybe even next year. If they hold up I bought theater pink and it goes perfectly with her ballet leotard and shoes.
Warm and Soft Wool Socks for Kids - Cute Animal Design, Thick Thermal Crew Socks for Children and Toddlers in Winter
43 Review
Children Toddler Thermal Cotton Winter Girls' Clothing
58 Review
Amazon Essentials Little 3 Pack Shimmer Girls' Clothing in Socks & Tights
63 Review
Girls Winter Fleece Lined Tights Girls' Clothing
46 Review
Pack Athletic Performance Basketball Drawstring Girls' Clothing
48 Review
Dancina Toddler Leotard Flutter Sleeve Girls' Clothing for Active
55 Review
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