Mumbai: 

Saath Saath: Vidya Balan and R Madhavan were cast opposite each other in Guru, and also feature in a mobile service ad

It is interesting that Vidya Balan and Madhavan's chemistry in a series of television commercials for a mobile service has done wonders for their careers.

Together

Their chemistry seems to have fascinated director Raj Kaushal, who has signed them for his next romantic comedy.

The pair had earlier worked in Mani Ratnam's Guru. It goes without saying that the Vidya-Madhavan pair is a romantic one.

It is also gratifying to note that Vidya Balan, who was in the news for her fashion faux pas, will now be walking the ramp in New York on August 24, in support of the Nargis Dutt Memorial. Vidya agreed to do this as it's for a good cause.