Jiah Khan was actually Shahid's original co-star and shot half of the film, but was asked to leave because she was reportedly getting over-friendly with Shahid and was just not doing her job well.
The movie was originally to be named "Yahoo", but yahoo.com wouldn't give producers the rights.
The film was titled " STAR" at one point.
Says Ken, "For the first time in his career Shahid was doing three films at the same time-Kaminey, Dil Bole Hadippa and my film Chance Pe Dance. Naturally there was a conflict of interest." Ken admits there were loud arguments over Shahid's schedules. "I'd ask for three days. He would have only one day to spare. I'd naturally be upset. Then understandably, Shahid wanted time off. He couldn't be seen on my set straight after shooting for one of the other two films. This naturally led to heated arguments. For me as a director it was okay to come on the sets without sleep. But Shahid had to catch up on his resting time. Or the dark circles would have shown on camera. And since Shahid is fair-complexioned those dark circles would be even more visible." The last thing that Ken wanted was for his hero to fall ill. "Priyanka Chopra had to be hospitalized because of overwork and exhaustion. I didn't want Shahid to go through the same experience."
The film was in the making for a long time.