Shooting has commenced for Kunal Kohli's yet-untitled production, which stars Shahid Kapoor and Priyanka Chopra.While details of the film have not been revealed, we believe that Priyanka is donning a look of the 1970s. A photograph of her on the film set in Mumbai showed her in a pink lehenga, a short blouse and dupatta (draped Mumtaz-style).

A recent tweet from the director (@kunalkohli) says: "Wrapped an all night shoot with @priyankachopra looking gorgeous thanx to Manish Malhotra,Mickey contractor & my DoP Sunil Patel."

A source in the film's unit revealed, "The film explores four aspects of love represented by four couples, with Shahid and Priyanka featured in quadruple roles. Each segment will see the two stars sport a new look and will be set in a new city."

Speculation of tension in the film unit has risen following the apparent spat between the two leading stars, but according to his tweet, all seems fine on the set:

"@kunalkohli: Nothing better,more satisfying in life than being on a film set. In the words of Raj Kapoor 'jeena yahan,marna yahan,iske siva jaana kahan'"

Followed by:

"@kunalkohli: @shahidkapoor joins us today. His first day of shoot,starting with a ... Haha can't say what scene ;-)"

In a short tweet, Shahid Kapoor mentioned that he was off to his first day of shooting for his first film after a year.

"@shahidkapoor: Wish me luck u all .. Keep it real," he tweeted.

With hits like Fanaa and Hum Tum under his belt, it has been said that this is Kohli's most ambitious project yet.

We will keep you in the know so stay tuned for more!