THIS IS AN EMERGENCY! ITS ABOUT A MOVIE SONG I HAVE TO DO FOR SCHOOL! PLEASE HELP!?

Hi!!! For school my choir teacher tells us that we have to sing a song from a movie for a solo! So...i pick 'What a girl wants'-Christina Aguilera for my song choice....but just 1 problem! I look on he internet to see if that song is on a movie...and it doesnt come up! The movie is Material Girls (Hilary duff and her sister) Please tell me that song is in that movie! please! omg! (emergency here...lol) thank you for the help!