Personalized Little Brother Rainbow Dinosaur Toddler Long Sleeve T-Shirt. Little Brother dinosaur. A cute dinosaur doodle with colorful back plates smiles as he peeks over the words "Little Brother". Cute gift for any little bro who loves dinosaurs. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.