Mumbai, Jan 10 (IANS) After playing the prostitute with a heart of gold, Rani Mukerji is set to do a U-turn. In Kunal Kohli's new film, she plays an angel who descends down to look after business-executive Saif Ali Khan's children.

Quite a leap of fate for an actress who has always taken grave risks with her career!

How does it feel to be playing an angel?

'Right now I'm not allowed to talk about Kunal's film. But, yes, any opportunity to surprise yourself and the audience is welcome,' Rani told IANS.

Some of the critics have sniggered at Rani's back-to-back roles as a prostitute in 'Laaga Chunari Mein Daag' and 'Saawariya'. Rani is unfazed.

'What's the big deal? An actor's job is to play a variety of challenging roles. And I don't think anyone has the right to question any actor for his choice of parts.

'I can't be happy doing just good-woman or bad-woman roles. Luckily for me I got to play three different kinds of prostitutes in 'The Rising', 'Laaga Chunari...' and 'Saawariya'. You can call it my prostitute trilogy. I hope people will remember my three different portrayals of the fallen woman with affection.'

For now Rani is happy playing the angel in Kohli's film, which is being produced by Yash Raj Films. She's currently shooting for the film with Saif in Bangkok.