Betty Thomas is set to direct Alvin and The Chipmunks: The Squeakuel for Fox 2000 and Regency, following up the surprise 2007 CGI-animated hit with the singing and lovable rodents.

According to The Hollywood Reporter, the new movie will introduce the Chipmunks' female counterparts, the Chipettes.

Justin Long, Matthew Gray Gubler and Jesse McCartney are returning to respectively voice the parts of troublemaker Alvin, intellectual Simon and chubby Theodore. It is unclear whether Jason Lee is returning. Casting of the Chipettes is under way.

RELATED: Alvin and the Chipmunks 4 Poster Kicks Off an Epic Road Trip

Writer deals are being finalized.

No production date has been set.