Bollywood birthday bashes: Hrithik Roshan, Farah Khan

Shah Rukh Khan, Ranveer Singh, singer Mika Singh, Ameesha Patel, Vivek Oberoi, Karan Johar, Arjun Kapoor, Subhash Ghai and others were seen partying hard at the actor's birthday bash. (Twitter). Preity Zinta was also seen at Hrithik Roshan's birthday …