Personalized 4th Birthday Party Girls 4 Year Old Women's V-Neck T-Shirt. 4th birthday for girls Women's V-Neck T-Shirt - Aqua has arrow and heart design that says I'm four 5.0 oz., 100% pre-shrunk cotton Athletic Heather is 90/10 cotton/polyester 1x1 rib collar with mitered v-neck Shoulder-to-shoulder taping Ladies' fit