Hilary Duff and Eugene Levy will join Steve Martin and Bonnie Hunt in the sequel to 2004's Cheaper by the Dozen. In Cheaper by the Dozen 2 (no snappy subtitle has yet been attachhed). Duff and family will battle Levy's own freakishly large batch of kids. In a statement, Duff said, "The franchise rocks, and the sequel's gonna be fun." Yes, Hilary, "rock" is exactly what franchises do.