My daughter has skinny legs.
She's still a size 12 but it's quite tight so I order a size 13, it fits well, slips a bit but she can still wear it with socks.
Capezio Girls 3800 Mary Jane Tap Shoe in Caramel - Size 11.5 M Toddlers
49 Review
Adorable Blowfish Malibu Play-t for Toddler and Little Girls
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Felix Flora Toddler Flower Dress Shoes - Adorable and Comfy Flats
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Flexible Comfort: pediped Flex Isabella Mary Jane for Toddlers and Little Kids
47 Review