In The Princess Diaries, what royal title does Mia Thermopolis discover she has inherited?

In The Princess Diaries, Mia Thermopolis discovers that she is the Princess of Genovia.

Mia learns that her late father was Crown Prince of the fictional European nation of Genovia. Because she is his only child, she becomes the heir to the Genovian throne and must decide whether to accept her royal responsibilities.

The title is sometimes incorrectly described as “Queen of Genovia,” but Mia is a princess during the events of the film. Her grandmother, Clarisse Renaldi, is the reigning queen and begins teaching Mia royal etiquette.

The Princess Diaries was released in 2001 and directed by Garry Marshall. Anne Hathaway made her film debut as Mia, while Julie Andrews played Queen Clarisse. The film was based on Meg Cabot’s 2000 novel of the same name.