They came out with an Alvin and the Chimpmunks movie (live actors for Dave Seville, the Chipmunks manager/father figure with cgi Chipmunks). And now, the Chipettes, the three member girl band, make their on-screen debut as the Miller sisters, Brittany, Jeanette, and Eleanor. Alvin really likes Brittany, the lead singer of her group. Simon and Jeannette become an item in the new movie, and Theodore meets Eleanor.
Basically the Squeakel (the sequel to Alvin and the Chipmunks live action takes place about a year after Dave and his former friend Ian part company, after Ian tries to ruin Dave's singing Chipmunk group he discovered. Ian decides to find a new signing, dancing animal trio, and her discovers Brittany, Jeannette, and Eleanor MIller, three female singing Chipmunks. Meanwhile, Dave gets injured and has to go to a hospital, but not before enrolling his new "sons" Alvin, Simon, and Theodore Seville in high school, where they deal with sports, bullies, and "fitting in a human world". There Alvin hears three girls singing, and it's revealed that Brittany, Jeannette, and Eleanor Miller, three sisters who are female chipmunks have been sent to school by their adopted mother/manager, Mrs. Miller. Ian attempts to trick Mrs. Miller into signing the girls to his record albumn, to create a rivalry with the boys. I think that's about it for the Chipmunks and the Chipettes in a live action/cgi movie.