This is my daughters favorite shoe. She outgrew her size 3. So I went to purchase a 3.5, only to find out they don't make half sizes for children. This really doesn't make sense to me since they make half sizes in the adult versions of pretty much the same shoe. I went ahead and bought the size 4 which is too big, but she loves these shoes so much she is just squeezing her feet into the size 3 until her foot gets big enough for the size 4.