Says an eyewitness at the fashion show who was present backstage, "Before walking the ramp, all the celebrities (Karan Johar, Shilpa Shetty, Manish Malhotra, Sameera Reddy, Hrithik Roshan, Farhan Akhtar, Tusshar Kapoor and Prateik) were together backstage and there was chatter and laughter all around. Except Ranbir and PC - they didn't talk at all."
The source adds that though Ranbir was friendly, he appeared very tense and preoccupied about something.
"Everyone was cheering each other. Priyanka, Karan, Manish and Ranbir stood near the monitor and watched others walk the ramp, but even then, there was not a word exchanged. They were both behaving as though the other was invisible. PC was seen chatting with her Don director Farhan and her Krrish hero Hrithik but pointedly kept a distance from RK. One was left wondering what has gone wrong between the two actors."
Says an insider, "Ranbir and Priyanka had shared a special relationship during the shooting of their film, and that hadn't gone down well with Katrina Kaif and Shahid Kapoor (their respective partners), so they are now giving each other the cold shoulder."
Both actors remained unavailable for comment.