Richie House Little Girls' Sweet Party Dress Size 2-6Y RH2457 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,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.