<Li> Jennifer Coolidge (cameo) as Ms. Price </Li> <Li> Laura Marano (cameo) as Hotel Babysitter </Li> <Ul> <Li> Justin Long as Alvin Seville, leader of the Chipmunks </Li> <Li> Matthew Gray Gubler as Simon Seville, member of the Chipmunks </Li> <Li> Jesse McCartney as Theodore Seville, member of the Chipmunks </Li> <Li> Christina Applegate as Brittany, leader of the Chipettes </Li> <Li> Anna Faris as Jeanette, member of the Chipettes </Li> <Li> Kaley Cuoco as Eleanor, member of the Chipettes </Li> </Ul> <Li> Justin Long as Alvin Seville, leader of the Chipmunks </Li>

Who does jesse mccartney play in alvin and the chipmunks