Perfect fit! I have the most issues trying to find things that fit my daughter. She's a size about a 6t in carters and 5/6 in target if this helps. Shes about 43 inches tall. The XS jacket fits her great with a big of room to grow, I expect this to fit her for another year. It's slightly long in the arms for her but the sleeves stay off her hands without cuffing them. The jacket is super flexible which is great for a child. Kerrits haven't disappointment me yet! Shes also wearing Kerrit's XS pants in this picture. (the only pants I can find that fit her without giving her a "diaper" look)