They are reportedly fighting over his Rockstar co-star Nargis Fakhri

All is not well between lovebirds Ranbir Kapoor and Katrina Kaif.

We hear that the two are on 'maun vrat' and haven't spoken to each other for a few days. The fight was over his Rockstar co-star Nargis Fakhri (unfortunate name, eh?) While RK maintains that he and the newbie are just friends, Kat thinks otherwise.

Perhaps because the Kapoor boy has been spending a lot of time with Ms Nargis even on days they are not shooting. This has irked Kat.

Earlier, RK would answer her calls promptly, but of late, they have been going on missed calls which aren't returned. It seems like the two are on a break and things will get back to normal only when Ranbir promises to keep his distance from Nargis.

Kat's retort to Dippy barb

Katrina Kaif needs to develop some claws. Her diplomacy isn't helping her. In the upcoming episode of Koffee with Karan, when the host asked Deepika Padukone if she had a message for Kat, she said, "No. but I have a question. Can I see your passport?"

It is clear that Ranbir's ex is taking a potshot at his 'older' girlfriend Katrina. When, at the music launch of Tees Maar Khan, someone asked Kat for her reaction, it was: "There is nothing in my passport, everybody can see it!"

We'd like to see her phone. Wonder if she will offer that as willingly?