Personalized T-Rex Dinosaur 3rd Birthday Women's V-Neck T-Shirt. A grumpy, purple T-Rex wearing a birthday hat sits and eats a birthday cupcake. Cute 3rd birthday gift for your little 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