These do run incredibly small! Following the advice of the other reviewers, I ordered a size 13.5 for my not quite size 11 five year old. They fit her with a bit of room to grow, but are not overly big.
These are her first jazz shoes and as of right now she only needs them for a recital in two months and 1 week of camp this summer. She loves them says they are comfortable so I guess that's good.
I stock this shoe for my studio because they are a great price and quality. However, when I'm sizing I end up going at least a full 2-3 sizes above street shoe size (if you want room for kiddos to grow). If your feet have done growing, I suggest 1-1.5 sizes above street shoe. If you plan on how small they run, you can get a good shoe.
This seems like it would have been a good dance shoe, but it runs extremely small. I would suggest buying 1 whole size up. My daughter wheres a 12- i bought a 12 but should have bought a 13 because they were really tight on her.
I ordered these in a 13 for my daughter. She actually measures a 12.5 so I was sizing up a little. When these shoes came they were tiny! She could barely squeeze her feet into them. I can't believe how small these are. I will be returning for Block jazz booties.