Karan Johar reveals SRK did Brahmastra for free

Karan Johar revealed why he did not approach Shah Rukh Khan for a cameo role in Ranveer Singh and Alia Bhatt starrer Rocky Aur Rani Kii Prem Kahaani. He then went on to talk about SRK's cameos in Ae Dil Hai Mushkil and Brahmastra.