Richie House Girls' White Summer Cotton Dress Size 1-6Y RH2492 100% Cotton 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 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.