Richie House Little Girls' Bridal Party Dress Size 3-8Y RH2290 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 6 is for the average 5-6 year old kid,ect Bright colors and bow details add some girly flair This sweet frock pulls on easily overhead to provide a prim and pretty look for little ladies,little girl will be the belle with this darling dress