Amitabh Bachchan, Kamal Haasan, Shah Rukh Khan open the 23rd Kolkata International Film Festival

What's brewing, Kamal?: Tamil superstar Kamal Haasan and West Bengal CM Mamata Banerjee at the inauguration of the 23rd edition of the Kolkata International Film Festival (KIFF) sparked speculation once again about the actor's much-awaited political debut. The actor tweeted along with this picture: Thank you Mamataji for inviting me again and again and honouring the best of my cinema family. I feel pride to part of this family. A great example of unity &diversity. Bon voyage for your London Trip. (Twitter Phtoo | Kamal Haasan)

Didi and SRK: Shah Rukh Khan hugs West Bengal Chief Minister Mamata Banerjee at the inauguration of the 23rd Kolkata International Film Festival in Kolkata yesterday. The actor tweeted: Too much fun and love at KIFF 2017. Love my Kolkata & as always the warmth of @MamataOfficial…U r the sweetest. (Twitter Photo | Shah Rukh Khan)

'DDLJ' jodi reunite: Bollywood actors Shah Rukh Khn and Kajol share a light moment at the inauguration of the 23rd Kolkata International Film Festival in Kolkata yesterday. (PTI Photo)

The two Bollywood Shahenshahs Shah Rukh Khan (left) and Amitabh Bachchan (right) at the inauguration of the 23rd Kolkata International Film Festival in Kolkata yesterday. (Twitter Photo | Amitabh Bachchan)

South meets North: Kamal Haasan (left) chats with Amitabh Bachchan (right) at the inauguration of the 23rd Kolkata International Film Festival in Kolkata yesterday. (PTI Photo)

KIFF opens: Actress Kajol lighting a lamp to inaugurate the 23rd edition of the Kolkata International Film Festival as actors Amitabh Bachchan, Shah Rukh Khan, Kamal Haasan, West Bengal Chief Minister Mamata Banerjee and Bengali actors look on. (PTI Photo)

Big B at KIFF: Amitabh Bachchan talks to the audience at the inauguration of the 23rd edition of the Kolkata International Film Festival (Twitter Photo | Amitabh Bachchan)

For the love of cinema: Amitabh Bachchan, West Bengal CM Mamata Banerjee, Shah Rukh Khan and Kajol (in order of apperance) at the launch of the 23rd edition of the Kolkata International Film Festival (PTI Photo)