Richie House Girls' Sweet Lace Sleeveless Dress with Belt RH2588 100%cotton Lining:100%cotton A size 6 is for the average 5-6 year old kid,a size 8 is for the average 7-8 year old kid,a size 12 is for the average 11-12 year old kid,ect Cotton sleeveless lace dress,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.