Richie House Girls' Party Princess Dress with Bow Size 3-8Y RH2571 100%polyester Lining:100%cotton A size 4 is for the average 3-4 year old girl, a size 5 is for the average 4-5 year old girl, a size 6 is for the average 5-6 year old kid,etc This lovely dress has a flower embroidery multilayered bottom,waist with belt to adjust An exquisite princess dress for your girls will make her get notices at the special event she attends