Princess Protection Program

Princess Protection Program is a 2009 Disney Channel Original Movie, directed by Allison LiddiBrown and starring Demi Lovato and Selena Gomez. The script was written by Annie DeYoung from a story by Annie DeYoung and David Morgasen. The film premiered on June 26, 2009 in the United States and was released on DVD on June 30, 2009. The film won the 2009 Teen Choice Awards for Choice Summer Movie.

The Princess Protection Program hides Rosalinda in Masons home in Louisiana, where she is to masquerade as a typical American teenager named Rosie Gonzalez. She meets Masons daughter, Carter Mason Selena Gomez, an insecure tomboy who works at the family bait shop and dreams of going to the homecoming dance with her crush, Donny Robert Adamson. Though Carter initially treats Rosie with barely masked hostility, she warms up to her after Rosie explains her situation, and the two become best friends. Carter teaches Rosie to act like a typical American teenager, and Rosie shows Carter how to disarm those that scorn them especially resident mean girls Chelsea and Brooke by behaving as a true princess. Rosie soon becomes popular at their high school.In an attempt to trick Rosalinda into exposing her location, General Kane announces false plans to marry her mother. Brooke discovers that Rosie is in fact Princess Rosalinda from a magazine she reads for Spanish class. She and Chelsea confront Rosalinda and threaten to expose her, but they agree to keep quiet if Rosalinda drops out of the vote for Homecoming Queen. Brooke and Chelsea also ruin their dresses for the dance. Rosalinda reads of the pending nuptials in the Brooke magazine and tells Carter that she has decided to return home. Knowing Costa Luna is still too dangerous, Carter secretly devises a plan to pose as Rosalinda and then use herself as bait to lure Kane into capture. Carter calls Mr. Elegante, Rosalindas royal dress maker, for help with her plan. He tells Kane that Rosalinda will be attending the homecoming dance and will be wearing a blue dress that he actually sends to Carter. In the meantime, Rosalinda agrees to stay for the dance in order to help make the event special for a group of friends, the group of girls wear masks, which helps Carter disguise herself as Rosalinda. ........

Source: Wikipedia