Bought this for my size 24 month granddaughter and really loved it. However, I am so glad I read the other reviews which indicated the item ran small! I bought the size 3 / 4 and it fit her perfect. She generally wears a size 24 month while 2 T's are just a bit large for her, so I'm glad I went up in size. It looked adorable and since she could wear light weight clothing underneath it she didn't complain that it was itchy. The costume was just warm enough for her to go jacketless on a 50 degree Halloween!