Question: who plays brittany on alvin and the chipmunks chipwrecked
Answer: Justin Long as Alvin Seville Matthew Gray Gubler as Simon Seville Alan Tudyk as `` Simone '' , Simon 's French alter ego after being bitten by a spider Jesse McCartney as Theodore Seville Christina Applegate as Brittany Anna Faris as Jeanette Amy Poehler as Eleanor