Follow along in this mixed-up adventure and capture the essence of Nella as a princess and a knight with the included necklace!   When Nella and Trinket accidentally agree to attend two sleepover parties on the same night, it becomes an outfit-swapping adventure! Follow along with Nella and her friends in this hilarious story of mix-ups and makeovers. This storybook comes with a collectible heart-shaped necklace that shows Nella as a princess on one side and as a knight on the other--so readers can have the best of both worlds!