My 2 year old is small for his age, wears clothes 12-18 months and 24 months depending on brand. As other reviewers have suggested, I went up a size and settled on the 3T. I've included a few photos, one showing the amount of shrinkage (machine washed and dried) and the other with a pair of 18 month old leggings for size comparison. The belt is almost the same size on all three leggings in the second photo.
Lilax Girls Basic Length Leggings Girls' Clothing in Leggings
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Slaixiu Leggings Fleece Printing GP777 3P B 130 Girls' Clothing and Leggings
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Adorable and comfortable Splendid girls' leggings for kids and babies
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IRELIA Girls Leggings Modal Spring Girls' Clothing for Leggings
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C9 Champion Girls Supersoft Bright Girls' Clothing and Active
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Pack Athletic Performance Basketball Drawstring Girls' Clothing
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Thermajane Girl's Cozy and Comfy Thermal Underwear Long Johns Set with Fleece Lining
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Eocom Pairs Childrens Winter Animal Girls' Clothing
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