I ordered 12-18 months and my daughter wears a US size 3.5.
They're big enough to have room to grow with age, but not too big for her to wear now.
Stylish and Comfortable pediped Flex Estella Mary Jane Shoes for Toddlers and Little Kids
60 Review
DREAM PAIRS Little Aurora 03 Communion Shoes and Flats for Girls - Top Choice for Stunning Style and Comfort
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
Breathable Fashion Sneakers for Baby & Toddler Boys & Girls: Bless Children Walking & Running Shoes
54 Review
New Balance Reveal Running Little Girls' Shoes and Athletic
56 Review
ALEADER Walking Sneakers Lightweight Purple Girls' Shoes and Athletic
52 Review
Bloch Bunnyhop Leather Ballet Slipper Girls' Shoes for Athletic
57 Review