Rajnikant is set to hold a special screening of his new film Robot for the Bachchan clan.

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"Rajnikant coming over to Mumbai to show us Robot ufffd which incidentally has become a storm all over the country," Amitabh Bachchan wrote on microblogging site Twitter.

The film also stars Aishwarya Rai in the lead. Made at a budget of Rs.175 crore ($38 million), it's the costliest Indian film ever.