Party Princess is a term associated with a person who entertains children at birthday parties, often dressed as different Disney characters. The most common party princesses costumes are Elsa, Cinderella, Sleeping Beauty and The Little Mermaid. Party princesses generally perform at private birthday parties for young girls - they sing, dance and play with the girls, all-while maintaining a party theme based on the character they're dressed up as. Party princesses are most common in upper-middle-class and upper class areas and recently became a common sight in Beverly Hills and North Hollywood.
The Princess Diaries, Volume VII: Party Princess, released in the United Kingdom as The Princess Diaries: Seventh Heaven, is a young adult book in the critically acclaimed Princess Diaries series. Written by Meg Cabot, it was released in 2006 by Harper Collins Publishers and is the seventh novel in the series.
When Mia bankrupts the student government buying high-tech recycling bins, she needs to raise $5000 soon, so that she can pay for the seniors' commencement ceremony. All her friends (including, her long-time boyfriend and so-called love of her life) mention selling candles, but Mia absolutely refuses, so Grandmere comes up with a solution: a musical, written and directed by Grandmere, starring Mia and her friends, portraying the achievements of Mia's famous Genovian ancestor, Rosagunde. Mia is thrilled, yet quite worried to be cast as the lead. She attempts to drop out, but Grandmere threatens to tell the seniors that Mia had bankrupted the student government (making them angry that she had not saved money for the commencement ceremony). 'Braid!' also results in a new-found friendship, between Mia and 'The Guy Who Hates It When They Put Corn In The Chili', aka J.P. - Mia's on-stage love interest, who turns out to be an aspiring screenwriter.