My 5 yr old granddaughter is small, but I bought size 4 for her and they were huge. I had almost given up on trying to find something to fit her. The 3's are too small. I decided to try one last time with these in a 4t and they fit perfectly. She doesn't get angry that they fall down like the others or bag around her. Thank you Fruit of the Loom for making sizes that fit properly.