King & King is a children's picture book co-authored and co-illustrated by Stern Nijland and Linda De Haan. King & King tells the story of a young prince whose mother is forcing him to find his princess. However, after meeting many princesses, the prince falls in love with another prince. King & King was originally written in Dutch and has since been published in ten languages. The book's illustrations have received both positive and negative reviews, as has the storyline. The book has been analyzed for both its usefulness in the classroom and its challenges to social norms.