Corina Fletcher is a designer specializing in pop-up books and paper engineering with twenty years of experience. She created the engineering for the pop-up version of Guess How Much I Love You and has worked with Oliver Jeffers and Lauren Child, among others, to create best-selling pop-up versions of their picture books. She lives in Sussex, England, with her family. Britta Teckentrup was born in Germany and moved to England in 1988. She is the author and illustrator of many books for children. She now lives in Berlin with her husband and young son.