Richie House Girls' Suit Princess Dress Size 4Y-8Y RH2561 100%polyester Lining:100%cotton A size 4 is for the average 3-4 year old kid, a size 5 is for the average 4-5 year old kid, a size 8 is for the average 7-8 year old kid,etc This sweet frock pulls on easily overhead to provide a prim and pretty look for little ladies. 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.