<Tr> <Th> Box office </Th> <Td> $55.5 million </Td> </Tr> <P> The Lizzie McGuire Movie is a 2003 American teen comedy film released by Walt Disney Pictures on May 2, 2003 . The film serves as the finale of the Disney Channel television series of the same name, and was the first theatrical film based on a Disney Channel series . The film stars Hilary Duff, Adam Lamberg, Robert Carradine, Hallie Todd and Jake Thomas, and tells the story of Lizzie's graduation trip to Rome . At its release, the film peaked at number two at the domestic box office behind X2: X-Men United . The Lizzie McGuire Movie was released on August 12, 2003 on VHS and DVD . </P> <P> The film begins as Lizzie McGuire prepares for her junior - high graduation with one of her two closest friends, David "Gordo" Gordon . Her other best friend, Miranda, has chosen to skip the graduation ceremony in favor of a trip to Mexico City to visit relatives . During the ceremony, Lizzie trips onstage and accidentally brings the curtain down on her fellow graduates; this causes her to be teased by her ex-best friend, Kate Sanders, and her younger brother Matt . After graduation, Lizzie and her class embark on a trip to Rome, Italy, chaperoned by their future high school principal, the stern Angela Ungermeyer . To their dismay, Lizzie and Kate are assigned to the same hotel room . </P> <P> Their class visits the Trevi Fountain, where Lizzie is approached by an Italian pop star named Paolo who mistakes her for his singing partner, Isabella . Paolo asks Lizzie to meet him at the fountain the next day, and she feigns illness to sneak away . He explains that he and Isabella are booked for the Italian Music Awards, but she left Italy after their breakup . Paolo tells Lizzie that Isabella lip syncs, and begs her to pose as Isabella for the concert . She reluctantly agrees, and begins to enjoy the designer clothes, dance rehearsals, and adoration from fans . </P>

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