Disney's The Princess Diaries (2001)

Shy San Francisco teenager Mia Thermopolis (Anne Hathaway) is thrown for a loop when, from out of the blue, she learns the astonishing news that she's a real-life princess! As the heir apparent to the crown of the small European principality of Genovia, Mia begins a comical journey toward the throne when her strict and formidable grandmother, Queen Clarisse Renaldi (Julie Andrews), shows up to give her "princess lessons."