Helena Bonham Carter has signed on to the cast of Sweeney Todd for DreamWorks and Warner Bros.

Variety reports she will play the diabolical meat pie-maker Mrs. Lovett in the film directed by Tim Burton, and starring Johnny Depp and Sacha Baron Cohen. Based on the Stephen Sondheim play, Mrs. Lovett is a murderess who dispenses her victims' bodies in meat pies and becomes the amorous accomplice of the Demon Barber of Fleet Street.

Shooting begins for Sweeney Todd in early next year for a late 2007 release.