View gallery Image Credit: Everett Collection The Princess Diaries remains a beloved film for millions of millennials and Gen-Z kids, and we're finally getting a third movie, according to Variety. The film's star, Anne Hathaway, later shared the news on Instagram on Friday, October 4, 2024. The original Disney movie, released in 2001, became an instant hit. Based on Meg Cabot's best-selling books, it follows the story of Mia Thermopolis, an ordinary girl who discovers she's the princess of Genovia.