Alvin has a girlfriend and his girlfriend picks on Brittany she thinks that can't sing (but she can sing) But Alvin is to in love too think that she could do such a thing But One day everything changes ?? His girlfriend Is named Charlene .They are still in bands The Chipmunks and The Chipettes Brittany is a quiet girl but she has a voice of angel Brittany has a crush on alvin Simon and Jeanette are together and Eleanor and Theodore are too !