Personalized Rawr I'm Three Dinosaur Women's T-Shirt. Rawr! I'm Three! A cute T Rex dinosaur holding a megaphone and wearing a birthday party hat roars to let everyone know its birthday is here. Cute gift for your three year old's 3rd birthday. Classic ladies' styling with a feminine neckline, sleeves and fit. 5.0 oz., pre-shrunk 100% cotton. Double-needle stitching throughout