"I originally ordered these in size 3.5 because I was worried that 2 was too small, but when I got the larger size, they were actually too big for me. I returned those for the size 2s and they fit perfectly! I would say on average I'm a size 2.5 in kids' and these shoes are so cool. They match my metallic Kipling backpack and I feel like an astronaut. The star eyelets and the gradients bring the entire shoe together, and the collar can be flipped down (I prefer it that way because it bothers my ankles). I suggest wearing these with longer socks though, because the label on the tongue feels scratchy at times. When these shoe break in, I'm sure they will be more comfortable, my left foot feels like it needs a bit more support."