It's hard to judge sizes with dance shoes, but Capezio recommends to order the street shoe size for this ballet shoe. My daughter wears a size 8 (toddler) in street shoes, but isn't terribly far from needing a size 9. I ordered an 8 & 8.5, since return shipping is free. The 8 fit her but it was tight and would be outgrown before the end of her dance class. The 8.5 was perfect, just enough room to grow to get her through.