We took the advice of other reviews and ordered a large one. Our daughter regularly wears size 12 shoes so we bought a size 1.5 and they fit her. (Note this is 2 1/2 sizes larger than her size!) There is a bit of room to grow, but it won't fall off her foot.
Breathable Fashion Sneakers for Baby & Toddler Boys & Girls: Bless Children Walking & Running Shoes
54 Review
Saucony Girls Cohesion Running Little
52 Review
ALEADER Walking Sneakers Lightweight Purple Girls' Shoes and Athletic
52 Review
LEOCI Soccer Shoe Coomfortable Numeric_11_Point_5 Girls' Shoes and Athletic
69 Review
Stylish and Comfortable pediped Flex Estella Mary Jane Shoes for Toddlers and Little Kids
60 Review
Capezio Girls 3800 Mary Jane Tap Shoe in Caramel - Size 11.5 M Toddlers
49 Review
Flexible Comfort: pediped Flex Isabella Mary Jane for Toddlers and Little Kids
47 Review
Dance in Style with Molly Jane Tap Shoes: Unisex-Child Mary Flats
50 Review