Hiawyn Oram has had more than 90 children's books published, including The Giant Surprise: A Narnia Story , The Second Princess , The Wrong Overcoat , and the Mona the Vampire series. She has received many prizes and awards for her work, including being shortlisted for the Smarties Prize for The Second Princess . Satoshi Kitamura is a Mother Goose Award and Smarties Prize-winning author-illustrator, whose books include Millie's Marvelous Hat and What's Wrong with My Hair? They previously collaborated on In the Attic and A Boy Wants a Dinosaur .