Stephanie Miller is a 15 year old chipmunk and is Brittany,Jeanette and Eleanor's cousin that come to town to visit for a 5 weeks. She has a severe medical condition where she can't be in the sun and can't go outside like any other normal person. She meets the Chipmunks or the Seville brothers and she suddenly is head over heels for the genius brother Simon. She tries get him to notice her and nothing works until Alvin and Brittany set them up on a blind date. Will they ever be together before she leaves? (The age of each of the Chipmunks and the Chipettes) Alvin: 15 Simon: 15 Theodore: 13 Eleanor:13 Jeanette: 14: Brittany: 15 Stephanie : 15