New Chefs Rack It Up Along With Guest Judges And Stars Natalie Portman, Wolfgang Puck, Daniel Boulud, Tyler Florence, Penn & Teller And Nigella Lawson. What happens in Vegas won’t stay in Vegas. The sixth season of the No. 1 food show on cable, Bravo’s Emmy and James Beard Award-winning series returns with “Top Chef: Las Vegas,” premiering Wednesday, August 26 at 9 p.m. ET/PT. The 17 new chef’testants take on Sin City this season to see if they have what it takes to become Top Chef. And for the first time ever – the series has a set of brothers competing against each other. Premiers August 26th on BRAVO.