"Director Vishal Bhardwaj and I have formed a mutual admiration society," said Kareena in an interview.
"I'm going to feature in every single film of his. And if I don't fit into a film of his he's just not going to make it, as simple as that," Kapoor said.
It was not clear if she was joking.
Kapoor starred in Bhardwaj's Omkara, a Bollywood version of Shakespeare's Othello.
The film is set for release later in July.
Bhardwaj is working on a trilogy of Hindi adaptations of Shakespeare. Omkara is the second, following Maqbool that released in 2003 and was based on Macbeth.
He has not yet talked about his third venture.