Big Brother 13 is the thirteenth season of the American reality television series Big Brother. The season premiered on July 7, 2011, broadcast on CBS, and ended with a 90-minute season finale on September 14, 2011, after 75 days of competition. Julie Chen returned as host. Season 12 HouseGuest Rachel Reilly was crowned the winner, defeating Porsche Briggs in a 4-3 jury vote. For the second time, Jeff Schroeder, from Big Brother 11, was voted as the season’s America’s Favorite HouseGuest.