Saheb Biwi Aur Gangster 3 starring Sanjay Dutt, Jimmy Shergill, Chitrangada Singh and Mahi Gill is in full swing of its promotion. The song of the film titled Lag Ja Gale was launched yesterday and the entire cast of the film attended the event. Even though Sanjay Dutt was not in attendance, the rest of the cast graced the event including director Tigmanshi Dhulia. The film is third in installment of the franchise and is once again directed by Tigmanshu.