According to Moviehole, Anna Faris and Christina Applegate will be voicing two of the three Chipettes in Alvin and the Chipmunks: The Squeakquel.
Moviehole's story:
No, not Spears. Referring to the original Britney - the one who can do fancy things with nuts (I suppose the other.... okay, I'll leave that right there), as in the singing 'Chipette'.
"Observe and Report" star Anna Faris (above) and Christina Applegate (newly employed after her series "Samantha Who" was given the chop this week) are voicing two of the three 'Chipettes' in the "Alvin & the Chipmunks" sequel - we just don't know who's lending their lungs to who yet (buy my money's on Faris as Britney!).
Justin Long, returning to voice 'Alvin' in the sequel (titled ''Alvin And The Chipmunks: The Squeakquel''), revealed the news to MTV, adding that he's excited at the prospect of working (whether he does or not - they may record their stuff separately) with his "Waiting..." co-star Faris again.
“I hadn’t talked to her in awhile, and I was like ‘Hey, what’s up?’ She said ‘You’re doing the Squeakquel!’ and then something happened and we couldn’t talk anymore. So, I’m pretty sure she’s doing it.”
The third Chippette is yet to be announced.
"Chuck" star Zachary Levi will play the 'human' in the live-action/CGI hybrid.