Big Brother supersizes the summer with its biggest season ever in 25 years since debuting in 2000, delivering extended episodes and the launch of Big Brother: Unlocked on Friday nights throughout the season. The new season kicks off with a 90-minute premiere Thursday, July 10 (8:00-9:30 PM, ET/PT) followed by a 90-minute Sunday episode July 13 (8:00-9:30 PM, ET/PT). Julie Chen Moonves returns as host. Paramount+ subscribers and Pluto viewers can continue to catch all the action on the Big Brother Live Feeds.
In the 90-minute premiere of its 27th season, Big Brother welcomes an all-new group of Houseguests into the Big Brother House. Expect the unexpected with more hours than ever of Big Brother this summer, and a season full of twists and turns. After its premiere, the series will air Wednesdays (8:00-9:30 PM, ET/delayed PT) expanded from its regular 60-minute episodes, followed by hourlong shows on Thursdays – featuring live evictions – and Sundays (8:00-9:00 PM, ET/delayed PT).
Then get ready for Big Brother: Unlocked as three BB All-Stars offer never-before-seen broadcast footage from the house, exclusive interviews, surprise guest appearances and unprecedented behind-the-scenes access. Former Houseguests share firsthand insight and expertise as they analyze gameplay, assess the competition and give their insider’s perspective every other Friday starting Friday, July 25 (8:00-9:00 PM, ET/PT).
*Paramount+ with SHOWTIME subscribers will have access to stream live via the live feed of their local CBS affiliate on the service, as well as on-demand. Paramount+ Essential subscribers will not have the option to stream live, but will have access to on-demand the day after the episode airs.
CBS SUMMER 2025 PREMIERE SCHEDULE
Thursdays (ET/PT)
8:00-9:30 PM – Big Brother (90-minute 27th Season premiere July 10)
8:00-9:00 PM – Big Brother (regular 60-minute time period beginning July 17)
Sundays (ET/PT)
8:00-9:30 PM – Big Brother (Sunday premiere July 13)
8:00-9:00 PM – Big Brother (regular 60-minute time period beginning July 20)
Wednesdays (ET/PT)
8:00-9:30 PM – Big Brother (starting July 16)
Fridays (ET/PT)
8:00-9:00 PM – Big Brother: Unlocked (Premiere Friday, July 25 then airs every other week – Aug. 8, Aug. 22, Sept. 5, Sept. 19, Sept. 26)
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