This is a princess book! No, it's a dinosaur book! No, it's . . . a T. rex book? A dragon book? From Linda Bailey, award-winning and critically acclaimed author, and Joy Ang, -artist and illustrator of the Mustache Baby series, comes an irresistibly irreverent picture book in which plucky princesses and determined dinosaurs have a battle royale over whose book this is. When they start calling in the big guns — or rather, the big carnivores — and decide to build a wall to resolve their differences, princesses and dinosaurs alike learn a thing or two about open-mindedness and sharing.