Trivia

Isabella Parigi's singing voice is by Haylie Duff, Hilary Duff's sister, dubbing over her sister's voice.

Despite serving as the canonical ending of the Lizzie McGuire (2001) series, with the main characters graduating middle school, new episodes of the series continued to air for almost a year after the release of the film.

If you listen towards the end of the performance of "What Dreams Are Made Of," another woman completely takes over the vocals and she sounds nothing like Hilary Duff. The woman is Angie Jaree, who sings the theme song of Lizzie McGuire (2001).

The reason why Lizzie McGuire (2001) was cancelled was because back in 1998, Disney Channel enforced a "65 episode rule" on its shows, where no show, no matter how popular, can go over 65 episodes (about 3 seasons). There are four reasons why this rule was implemented...

• Disney stars have quick expiration dates; the Disney Channel can't follow them through high school. The shows had to be shot fast (usually within 2 and a half years), before key actors outgrow their roles and it becomes harder for young viewers to relate to their characters.
• Disney Channel's programs are typically geared towards 9-12 year olds - otherwise known as "tweens". They start watching the show at age 9 and the show ends by the time they're 12. So, once they're 13, they would have graduated to channels aimed at teenagers like MTV or Freeform. As these shows live on in reruns, new generations of tweens can discover them and grow up with them, thus expanding the show's fan bases.
• The episode limit would allow an episode to be broadcast each weekday, for a total of 13 weeks, which is one-quarter of a year. Four different Disney Channel shows would be able to be broadcast within one calendar year by following this (5 x 13 = 65) standard.
• Disney actors initially sign 3 year contracts and after 3 years, actors could renegotiate, but Disney did not want to pay its stars like that.

The rule did upset many fans who start to get vested in their favorite shows only to have them end so abruptly. The rule was officially discontinued in August 2004, when Disney ordered additional episodes of That's So Raven (2003), but still Disney Channel shows don't go over 4 or 5 years.

Disney's fourth theatrical movie, and first live action movie, based on a Disney show. The previous films being DuckTales the Movie: Treasure of the Lost Lamp (1990), A Goofy Movie (1995) and Recess: School's Out (2001).