Director Aanand L Rai has a knack for extracting moving performances from his artistes. It's not surprising then that in Zero, her first collaboration with the director, Katrina Kaif has taken on a layered role of an actor battling alcoholism.

Considering the part was unfamiliar territory for her, she apparently turned to the personal journeys of Hollywood stars Liza Minnelli, Demi Moore and Lindsay Lohan — all of whom have battled alcohol abuse at different points in their career — for inspiration.