I read reviews saying these ran big but decided to get a 7/8 anyways (she wears an 8 shoe now). They are big but she can still walk and run in them and I figured she would have time to grow into them by the summer time when she will wear these everyday! We got the same pair last summer but got a size smaller than what she was at the time and they fit perfectly! She wore them almost everyday from May - September and they showed little wear. Never gave her any blisters and she walked, ran, played and wore them in the water! I definantly recommend them to anyone big or small who wanted high quality flip flops!