Personalized Groomasaur Youth T-Shirt. Groomasaur! A cute T-Rex with a top hat and bow tie is ready for his wedding day. Cute gift for any groom who loves dinosaurs. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.