Princess Diaries Wiki
Mia Thermopolis

Full Name

Amelia Mignonette Thermopolis Grimaldi Renaldi


The Princess Diaries
From the Notebooks of a Middle School Princess

Portrayed by

Anne Hathaway

First seen

"The Princess Diaries"

Last seen

"Royal Wedding"

Date of Birth

May 4th 1987


Helen Thermopolis
Phillipe Renaldi
Clarisse Renaldi
(paternal grandmother)
Frank Gianini
(stepfather, deceased)
Shirley "Mamaw" Thermopolis
(maternal grandmother)
"Papaw" Thermopolis
(maternal grandfather)
Marie Thermopolis
(maternal aunt)
Pierre Renaldi
(paternal uncle; abdicated royal status)
Rocky Thermopolis
(maternal half-brother)
Olivia Grace Clarisse Mignonette Harrison
(paternal half-sister)
Hank Thermopolis
(first cousin)
Mr. Gianini
Mrs. Gianini
Michael Moscovitz
Prince Rene of Italy (distant cousin)
Sebastiano Grimaldi (second cousin)


Princess of Genovia
Queen of Genovia (Movies only)
Author (book 10)


Queen of Genovia

Significant Other(s)

Michael Moscovitz (husband)
Nicholas Devereaux (movie boyfriend)
Andrew Jacoby (ex-fiance)
Kenny Showalter (ex-boyfriend)
J.P. Reynolds (ex-boyfriend)
Josh Ritcher (kissed/crush)

Amelia Mignonette Thermopolis Grimaldi Renaldi, most commonly known as Mia Thermopolis, is the protagonist in the Princess Diaries book series.

Early Life[]

Mia was born out of wedlock to Helen Thermopolis, a painter, and Phillipe Renaldi, the prince of Genovia. Due to Phillipe being unmarried and in his early twenties when Mia was born he decided to not tell her she was a princess. He figured she would never have to inherit the throne because he would have more children later in life. Therefore until she was fourteen she thought her father just had a role in the Genovian government. Ultimately because her parents never married Mia grew up in San Francisco in an old firehouse with her mom and and her cat, Fat Louie who she got on her sixth birthday.

Becoming a Princess[]

Mia is informed of her princess status near the beginning of the first book. She is told this by father when he came to visit Mia and her mother. She is told in the Plaza Hotel and promptly dissolved into tears. She was 14 and a freshman in high school. She kept this secret from her friends, causing significant tension between them. she has to learn all of the ways of being a princess and she is not particularly good at that.

The Big Reveal[]


In the Books, Mia's title is revealed to the press by Grandmere. Grandmere does this simply to get Mia acquainted with the press.


In the Movie, Paolo, Mia's stylist is the one to break the big secret. He is seen to be doing this for money, though it is not clear whether this was Paolo's intent from the beginning or if he was later bribed. Queen Clarisse seems to forgive Paolo because he is seen being called in to fix Mia just prior to the Genovian Independence Day Ball.