Personalized T-Rex 2nd Birthday T-Shirt. A cute little T-Rex dinosaur is smiling and wearing a birthday hat as it sits with its 2nd birthday cake. Adorable gift for your two year old! Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.