Amelia Mignonette Grimaldi Thermopolis Renaldo (
Amelia Mignonette Thermopolis Renaldi in the film series), also known as
Mia Thermopolis, is a
fictional character and the
protagonist of
The Princess Diaries novels by
Meg Cabot. The story revolves around her diary, which she writes in religiously, and her relationships with her best friend Lilly Moscovitz, her long-time boyfriend and "the love of her life" Michael Moscovitz, her grandmother, and others. She is the heir to the throne of the fictional country, the Principality of
Genovia, having been pushed into the title.