It’s not always possible for movie adaptations to be exact replicas of the novels they are based on.

As for the first two films, they feature plenty of book-to-screen changes.

However,in Meg Cabots novels, he is alive after surviving testicular cancer.

The Princess Diaries

Prince Phillipe and Mias mother are not together in the novels, but they have an amicable co-parenting relationship.

They do reconcile in the lastPrincess Diariesbook.

If Prince Phillipe was alive in the movie, he and Clarisse would have had to share the spotlight.

Anne Hathaway as Mia in The Princess Diaries

Custom image by Yeider Chacon.

If Prince Phillipe was alive in the movie,he and Clarisse would have had to share the spotlight.

Cabots version of Clarisse isn’t an easy character to like.

She’s overly critical of Mia and disapproves of everything she does.

Anne Hathaway as Mia looking in the mirror in The Princess Diaries

She also has tattooed eyeliner and drawn-on eyebrows.

She loves to smoke, and she fancies drinking Sidecars.

In the books, Clarisse also doesn’t like speaking English.

Queen Clarrise Smiling as Joe Kisses Her Hand in The Princess Diaries 2

She almost always speaks French and doesn’t like it when Mia speaks to her in English.

This makes it easier to root for her in the film.

He’s totally original to the movies, and Mia winds up with Michael in the books instead.

Mia, Lilly, and Michael standing together on the street in The Princess Diaries

Lilly becomes furious and stops talking to her.

However, the two do eventually make up.

She starts a website called IHateMiaThermopolis.com, where she records all of Mia’s embarrassing moments.

Michael and Mia talking outside at the coronation in The Princess Diaries

Lilly and Mia have a more serious fight in Cabot’sPrincess Diariesnovels.

When J.P. and Mia start dating, Lilly makes it her mission to ruin Mias life.

She starts a website called IHateMiaThermopolis.com, where she records all of Mia’s embarrassing moments.

Mandy Moore smirking in The Princess Diaries

Fortunately, Mia and Lilly make up once again.

However,the movies don’t show this portion of Lilly and Mia’s friendship.

However,Mia doesn’t seem to have truly close friends outside of Lilly in the movies.

The Princess Diaries waiter helping Mia at the state dinner

This is likely because a movie’s runtime limits how many characters it can truly flesh out.

In Cabot’s books, Mia has other friends aside from Lilly at Albert Einstein High School.

And following her fight with Lilly,Mia becomes friends with another outsider, Tina Hakim-Baba.

Nicholas (Chris Pine) looking up and smiling in The Princess Diaries 2.

This makes Mia’s high school life feel more fleshed out and interesting.

Instead, Mia spends much of the series interested in Pine’s Nicholas.

They’re still together whenThe Princess Diaries 2comes to a close, but they aren’t married yet.

Julie Andrews and Anne Hathaway in Princess Diaries

PerhapsThe Princess Diaries 3will see Mia finally tying the knot.

Funnily enough, it’s Mia’s fallout with Lilly that brings her and Lana together.

The two form a friendship that lasts until the end ofThe Princess Diariesseries.

Movies

Lana is supportive of Mia and her mean girl streak doesn’t surface again.

This never happens in the movies, with Lana and Mia remaining enemies for the duration of the series.

It’s possibleThe Princess Diaries3will change this, assuming Lana makes an appearance in the upcoming sequel.

The Princess Diaries

This would be a way to be faithful to the books in the upcoming film.

Ultimately, they decided against this route.

It provides the perfect backdrop for her princess origin story, boasting an elegant but modern atmosphere.

The Princess Diaries

It’s fitting for a princess who’s accustomed to an ordinary life.

InThe Princess Diariesmovie,Mia only gets a diary at the end of the film.

Fortunately, Mia convinces them that she can be queen even if she isn’t married.

At the end ofThe Princess Diaries 2,Mia is crowned queen and thus begins her reign.

The story doesn’t play out in the same way in the novel.

In Cabot’s iteration, Prince Phillipe abdicates the throne to be with Mias mother.

Mia has to fight to convince the Genovians that she has what it takes to be the queen.

Although she succeeds,she doesn’t immediately become the queen of Genovia.