Vivaan Shah, who'll be seen playing a pivotal role in Farah Khan's upcoming directorial venture Happy New Year, turned a year older today and he celebrated his birthday on the film's sets.Vivaan's parents Naseeruddin Shah and Ratna Pathak Shah also came to the sets to wish him and they also brought lunch for the film's cast to celebrate their son's birthday. Farah posted a picture, which features her, Shah Rukh Khan, Sonu Sood, Boman Irani, Naseer, Ratna and Vivaan, on Twitter, writing, “Baby Vivaans birthday on set 2day! N the shahs cm bringing lunch 4 all of us..yayyyyy (sic).”