Nawazuddin Siddiqui is not seen in Bollywood parties and the reason is his insecurity. Nawaz is very close to Shah Rukh Khan as well as Salman Khan but he generally miss the Bollywood parties b Sallu or SRK.
He said in an interview that:
Like everybody else, Salman bhai too used to invite me to his parties but I tend to avoid all Bollywood bashes.” We all have that one introvert friend whom we have to convince for light years to come to party, right?” Despite walking red carpets at Sundance, Berlin and Cannes film festivals, I’m still uncomfortable at a typical desi party. So now, I guess, everybody has decided not to invite me knowing I’ll say no
He always said that how Shah Rukh & Salman supported him praised his work. He said:
In the garden of Bollywood, Shah Rukh and Salman are as different as a red and a black rose, each blooming with their own beauty. Neither has ever made me feel or look bad. They’ve never been jealous or told a director to cut my role or reduce my lines. In fact, I’ve become the face of a leading fashion brand for men’s wear which today, sells even better up North than it did before. They were happy to learn this and congratulated me warmly.