Kareena's name had always been linked to the movie with Saif admitting to that fact that he wanted Kareena in his first home production. Director Imtiaz Ali was adamant on having Deepika and had it his way. Deepika Padukone wasn't happy Kareena's name being talked about more than hers and this led to a cold war between the two.
Kareena Kapoor might have skipped that premier as she did not want to see Deepika playing a character which could have so easily been hers. Or she might not have felt comfortable seeing Saif and Deepika walk hand in hand. Whatever be the reasons Bebo it was the most important day in Saif's career and fatigue was no excuse to skip the premier!