It was ace director and friend of friends in Bollywood Karan Johar’s 42nd birthday on 25th May. As the bachelor turned a year older many b town biggies came to wish him at his residence in Mumbai. Sonam Kapoor, Alia Bhatt, Varun Dhawan, Nargis Fakhri, parineeti, Vidya Balan with hubby, Aamir Khan with Kiran Rao, Bipasha Harman, ritesh genelia and many others in attendance made this a gala affair.