Richie House Big Girls' Sweet Sundress with Metallic Tag Rh2271b Size 2-10 Size for girls 2-10 years 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 8 is for the average 7-8 year old,etc Little ladies will be the belle of the ball when they don this darling dress. Its flare bottom and bright color add some girly flair SIZES FOR LITTLE AND BIG KIDS ARE BOTH AVAILABLE, PLEASE CHECK THE OTHER LISTING IN THE OTHER SIZE RANGE