Simplify the following text for a Grade 7 native English-speaking person.
Original: The Lizzie McGuire Movie is a 2003 Walt Disney Pictures comedy film based on the Disney Channel show Lizzie McGuire which was released on May 2 , 2003 , by Walt Disney Pictures .
Simplified: The Lizzie McGuire Movie is a 2003 comedy film based on the Disney Channel series Lizzie McGuire .