It was a big bang waiting to happen on Saturday afternoon as stars descended onto the Mehboob Studio premises in Bandra. While Ranbir Kapoor and Deepika Padukone shot for their latest film helmed by Ayaan Mukerji, Katrina Kaif was there to shoot for an ad film. And lo and behold! Even Salman Khan was present there working on his next film Dabangg 2.