Karan Johar has done it again. After casting Kajol and Kareena Kapoor for “Kabhi Khushi Kabhie Gham”, way back in 2001, he's got the two talented actresses again for his forthcoming venture, reported Times of India Wednesday. The film will be directed by debutante Siddharth Malhotra, the grandson of the late Prem Nath. The paper's source revealed, “Kajol and Kareena have been finalised for Karan Johar's forthcoming film, which will start once the actors are free from their on-going films.” The film, which is yet untitled is based on the Hollywood film, “Stepmom” (1998), starring Susan Sarandon and Julia Roberts. So how did the casting come about? “Karan, who is directing Kajol in ‘My Name Is Khan' is very happy with her work. The same holds true for Kareena, who is working opposite Saif Ali Khan in a project directed by Rensil D'Silva,” said the source.