We found that the sizes 10 and below run narrow. Size 11 and above they offer more room. We bought my 6 year old grand daughter a size 10 (her normal size) they hurt her feet real bad. We exchanged them for an 11 (you can see the difference) she put them on tonight and ran around the house saying she "loves them". I have a 4 year okd grand daughter and the size 8 is a perfect fit and she adores them! (2 pairs)