Big B at campaign launch

Uddhav Thackeray in deep conversation with Amitabh Bachchan at the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

(L-R) Amitabh Bachchan, Uddhav Thackeray and Sunil Prabhu during the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

Aditya Thackeray caught deeply engrossed in the proceedings during the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

(L-R) Uddhav Thackeray, Amitabh Bachchan and Sunil Prabhu pose together during the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

Amitabh Bachchan felicitated by Uddhav Thackeray and Mayor Sunil Prabhu during the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

B'wood actor Amitabh Bachchan welcomed by Mayor of Mumbai Sunil Prabhu at the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

Uddhav Thackeray and Amitabh Bachchan pay tribute to late Balasaheb Thackeray during the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

Amitabh Bachchan arrives at the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

Amitabh Bachchan and Uddhav Thackeray arrive at the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)

Elegant Rashmi Thackeray, wife of Shiv Sena's Uddhav Thackeray spotted at the launch of 'Clean Mumbai' campaign, held in Mumbai on January 23, 2013. (Pic: Viral Bhayani)