Even if you measure their feet and use the size chart, the shoes will be oversized and unpredictable. I bought two sizes of the same shoe and they were the same length. I used the chart to purchase the first pair, bought 2 sizes smaller and the shoes were the same size! Neither of these worked for my daughter.
Stylish and Comfortable pediped Flex Estella Mary Jane Shoes for Toddlers and Little Kids
60 Review
Slip-Resistant Crib Shoes for Babies: Robeez Soft Soles for Girls and Unisex Toddlers, Ages 0-24 Months
53 Review
Adorable Blowfish Malibu Play-t for Toddler and Little Girls
47 Review
Flexible Comfort: pediped Flex Isabella Mary Jane for Toddlers and Little Kids
47 Review