Personalized Big Brothersaurus with Cute Sibling Dinosaurs Youth T-Shirt. Big Brothersaurus! A cute little dinosaur is protected by his Big Brothersaurus. Fun Youth T-Shirt - White for brother! 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.