"Bought this costume for my 4 1/2 year old and it fits well, but for a 6 I think it was a little big. Overall we love it except that the hat part w the dog face won't stay on her head. Good quality for the price and I liked that it had holes in the bottom with elastic to slip On their shoes under. It's a cozy cute look!y daughter loves it, but it bothers her that the hat won't stay on."