Personalized Super T-Rex 3rd Birthday Women's V-Neck T-Shirt. Rawr! A T-Rex superhero wearing a birthday hat is surrounded by a colorful burst of confetti. Cool 3rd birthday gift for your three year old. 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