"Aamir invited Karan to his 'Peepli Live' music release. Karan invited him back for his IHLS party. That's it. To conclude that they are working together in a film is not just pointless, it's also unnecessary," said the source.

If Aamir walked in sans his wife Kiran for the party, the film's director Punit Malhotra and his leading man Imran Khan were also seen solo at event but hardly looking lost.

"We had a mad evening. It was super-entertaining. I got everyone drunk," said Punit the day after the party. According to him, Imran's girlfriend Avantika was traveling.

Everyone from Sammir Dattani to Karan Johar was hung-over the next morning, Punit made sure of that. He personally went around chasing the guests and dowing shots down their throats.

Sonam Kapoor, the leading lady of I Hate Luv Storys, was supposed to fly down to Mumbai for the celebration party. But she did not eventually show up because of the tight schedule.