Personalized 4th Birthday Outfit 4 Year Old Women's V-Neck T-Shirt. Funny birthday turtle wears a party hat and carries gifts on this 4th birthday Women's V-Neck T-Shirt - Aqua 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