We used the size chart on the Robeez website and ordered a 6-12 month shoe for our 10-month-old child (who consistently ranks in the 50th percentile for height and weight and often fits in clothes true to size), but these were far too big. I wish I would have listened to reviewers on here and ordered a size down! These are being returned for a smaller size. The shoe is cute and good quality, but the sizing is confusing!