The Princess Diaries

The Princess Diaries is a series of epistolary young adult novels written by Meg Cabot, and is also the title of the first volume, published in 2000. The series spent 48 weeks on the New York Times Children's Series Best Sellers List. The series revolves around Amelia 'Mia' Thermopolis, a teenager in New York who discovers that she is the princess of a small European principality called Genovia. The series follows Mia's life throughout high school in the 2000s and juggling regular teenage life with being a royal princess. The books are noted for containing many pop culture references from the 2000s that influence some of the plot.

Meg Cabot quotes the series' inspiration on her website stating: "I was inspired to write The Princess Diaries when my mom, after the death of my father, began dating one of my teachers; they later went on to get married just as Mia's mom does in the book! I have always had a 'thing' for princesses (my parents used to joke that when I was smaller, I did a lot of insisting that my 'real' parents, the king and queen, were going to come get me soon, and that everyone had better start being a lot nicer to me) so I stuck a princess in the book just for kicks... and voilà! The Princess Diaries was born."

In 2015, a spin-off series for tweens launched. Mia's half-sister Olivia made her debut in From the Notebooks of a Middle School Princess, released in May 2015. The new book in the Princess Diaries series, The Quarantine Princess Diaries, was published in March 2023.