Claire Freedman is the author of several picture books, including Pirates Love Underpants!; Dinosaurs Love Underpants!; Aliens Love Underpants!; Snuggle Up, Sleepy Ones; One Magical Day; A Magical Christmas; Dilly Duckling, and My Grandparents Love Me. She lives in Essex, England. Ben Cort is the illustrator of several children's books, including Aliens Love Underpants and Octopus's Garden, which have been published in eighteen languages in twenty countries worldwide. Ben lives in Bedfordshire, England.