I bought this hat in the 0-6 month size for my one month old son. He is average size. This hat already looks small on him. I highly advise ordering at least one size up, depending on the age of your child.

I like this hat. It is very cute. I had to give it only three because it is a little small and my daughters head is about 50th percentile and she just turned 6 months. She will only be able to wear it a little while longer