"My daughter is super skinny, yet tall. She is 3 yet can still fit in 18m pants (except the length is an issue). She's been nagging me to buy her leggings and I wasn't sure what size to buy. I purchased a 24m and a 3T. I thought the 3T would just fall off her like other 3T pants but they fit fine, just were a little less fitted than the 24m. She loves them and never wants to take them off..literally. Now I have to buy them in every color imaginable."