"The costume is very cute and well put together, but is very small for a 3T/4T. My son is only 22 months and is currently wearing 2T sized clothes. When I bought this I was worried it would be too big, but I was wrong. He just fits in the body of the costume, and there is no chance the head piece with the mane will ever fit. It is just way too small. If you have a smaller child, this coustume would be great, but it isn't going to work for us."