What is big bro 13?

Big Brother 13 was the thirteenth season of the American reality TV show, Big Brother. The season premiered on CBS on July 7, 2011, and ended on September 14, 2011. The season had 14 houseguests and was the second season of the show to feature a cast composed entirely of returning players. Rachel Reilly, who was the winner of Big Brother 12, returned to the game along with her fiancé Brendon Villegas.

The season was divided into two teams, veterans and newbies, with the veterans being the returning players from previous seasons. Rachel Reilly emerged as the winner, becoming the first woman to win the game in a season that involved returning houseguests. She received the grand prize of $500,000.

The season was known for its intense gameplay, numerous twists, and controversies, including a controversial eviction that resulted in the first double eviction of the season. The season also featured several twists, including the return of Pandora's Box and the Golden Key twist, which allowed some players to avoid being nominated for eviction.

Overall, Big Brother 13 was a successful season, attracting a large viewership and generating significant media attention.