"Nach Baliye 7" producer Ekta Kapoor is eyeing a quartet of judges for the forthcoming dance reality show -- and she wants actress Vidya Balan to take one seat.Kapoor, who produced Vidya's "The Dirty Picture", is said to be looking out to make the new season different from the show's previous editions, and one aspect of it is to get a new judging panel.While author Chetan Bhagat has already been signed for the show, now Vidya is said to have been approached for it too."Vidya has been approached to judge 'Nach Baliye 7', but we are yet to hear her side of things," a source close to the show said.The show will reportedly have two female judges as Kapoor wants to increase the glamour quotient.“Nach Baliye 7” will be aired on Star Plus in May.