We recommend measuring your child's foot by placing it on a sheet of paper, marking the toe and heel, and then measuring the distance of the markings with a ruler. Kids are wiggly! This method helps. :)
FOR BEST FIT:
Our shoes fit best if they are quite snug, with no more than ¼ inch extra room at the toes. Because the leather of our shoes is extremely supple, our shoes will naturally stretch to mold to the particular shape of your child's foot, and also give some extra room even after the foot grows a bit.
Our little girl is currently wearing a size 17. Her foot measures exactly 4¼ inches long and this size fits her perfectly-- snug yet comfortable, and still a tiny bit of growing room. She can wear a size 18, but it's a bit loose on her.
+ (If you want to size up to allow your child extra growing room, remember that thick socks are excellent to help larger shoes fit better!)