"The Princess Diaries" is a delightful young adult novel written by Meg Cabot. It follows the story of Mia Thermopolis, a socially awkward teenager living in New York City who discovers that she is the heir to the throne of the fictional European country of Genovia. Mia's life is turned upside down as she navigates the challenges of royalty, friendships, and romance, all while trying to maintain some semblance of normalcy in her everyday life. The book is filled with humor, heart, and relatable teenage struggles, making it a beloved classic among readers of all ages. It spawned a successful series of books, as well as a popular film adaptation starring Anne Hathaway as Mia. Meg Cabot's witty writing style and engaging characters have made "The Princess Diaries" a staple of young adult literature.