Richie House Girl's Summer Chiffon Pleated Dress Size 2Y-8Y RH2430 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 Pleated chiffon dress style,cotton lining,comfortable and wearable,waist with belt to adjust For a day spent outdoors or an afternoon with pals, this dress is great for little sweeties.Little ladies will be the belle of the ball donning this darling dress.