We make sizing easy. Just measure your little one’s foot from heel to big toe on a blanc paper. Compare this with our size chart below, and you are ready to purchase. All our shoes are true to size. You can add a quarter inch into their baby’s foot measurement to determine the correct size. We believe our leather moons look best when fitted closed to your baby or toddler foot, so there’s no need to size up. Our leather moons will stretch slightly as they are worn.