Will Chris Pine return to Genovia for 'The Princess Diaries 3?' While appearing on 'The Tonight Show Starring Jimmy Fallon,' Pine addressed the news that Anne Hathaway will return as Mia Thermopolis for a third 'Princess Diaries' film. Pine starred alongside Hathaway in 'The Princess Diaries 2: Royal Engagement' as Nicholas Devereaux, who fell in love with Mia. The pair professed their love for each other at the end of the 2004 sequel.