Personalized Little Brothersaurus Toddler Long Sleeve T-Shirt. Little Brothersaurus! A cute little brothersaurus dinosaur is protected by his big sibling. Fun Toddler Long Sleeve Tee - Pink for the little bro! 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.