Superstar Amitabh Bachchan revealed his look in R.Balki's 'Shamitabh' on his microblogging page.

Dressed in a white shirt and blue denims, Big B is sporting a grey hair wig with a full grown beard in the film.

"'Shamitabh' in the day .. its quite an effort to live with that hair all day !!," the actor posted alongwith a picture on his microblogging page.

The film also stars South Superstar Dhanush and Akshara Haasan.

After 'Cheeni Kum' and 'Paa', this will be Amitabh's third film with the director.

'Shamitabh' is slated to release in 2015.