My daughter is tall and thin, 75% tall and 25% heavy. She will be 3 years old in May and ordered these pants in size 2. The pants fit well, but they are a bit short, not enough to change as the next size is too big (in width). Briefcases since the lining comes out and it bothered me to see the white fabric. I've washed them a few times and they've already changed color a bit. Her daycare is pretty flexible when it comes to dark blue pants (even dark jeans will work), so that's my last resource and I only wear them when everything else is dirty.