This golden couple has been married for two years now but till date they have not signed any ad film together though many ad-makers run after them with whopping amounts. May be the amount that was offered to them was not up to their expectation. But now Bollywood's most sought after couple, Abhishek Bachcan and Aishwarya Rai Bachchan have signed a soap ad for a whopping Rs 25 cr. Talking about the deal, the source said, “The endorsement market is booming right now. Also, it will be the first time that Abhishek and the Bachchan bahu will be seen together in a commercial. The couple had been in talks for a long time with the ad filmmakers, who were extremely keen to get the two together. They finally agreed to be part of the ad last week.” The couple had recently appeared on the Oprah show and received great applaud. The duo is doing couple of films together and next they will be seen in Mani Ratnam's ‘Ravan' where Abhishek is playing Ravan and Aishwarya is playing Sita. __