"After reading other reviews I bought this costume for my little girl in a size medium 7-10. She is 5 years old, 44" and 43 lbs. She typically wears a size 5 or 6, so I think this costume runs small. The apron on the front ties in the back and that allowed me to gather the little bit of extra material in the waist, so the costume fit nicely. I am very pleased with this costume and would buy it again."
"I just purchased this costume for my little boy. It is very well made, zips in front, and the wolf hood fits nice and snug to stay in place. My little boy LOVES it. My son is 2 years old and typically wears a size 3T. He is 36" tall and weighs 32 lbs. He has a thin build. I ordered the 18mos-2T and it fits him perfectly. There isn't much room to layer a bulky outfit underneath, but he can easily wear a cotton shirt and pants under the costume. I think this costume runs a little big to be considered 18mos-2T, it seems to be closer to a size 3T in my opinion. I do not regret this purchase and I'm very pleased with the quality."