I expected this to be a bit bigger I got the 2T size for my son who is 14 months and in 18 month size most of the time. I was hoping it was going to be a little big so he could grow into it. It fits him well right now and looks really cute. Plus its a cool material not your typical little kid rain jacket. Its softer. Anywho if you want your kid to grow into it I'd get a size bigger than you'd think.