CBS Announces Two-Night 'Big Brother' Season 21 Premiere Event

Meredith Jacobs

Ready to watch total strangers living under one roof and being watched 24/7 again?

CBS announced Monday that Big Brother Season 21 will kick off with a two-night premiere on Tuesday, June 25 and Wednesday, June 26 at 8/7c. There will once again be three weekly episodes, with one airing Sunday, June 30 at 8/7c.

Did the Right Person Win 'Big Brother' 20? (POLL)

Did the Right Person Win 'Big Brother' 20? (POLL)

The show crowned its 20th winner.

Beginning on Wednesday, July 10, the reality competition show moves to Wednesdays and Thursdays at 9/8c and continues airing Sundays at 8/7c.

All three editions of Big Brother ranked in last summer's top 10 in viewers and key demos and was among the top five of the most-tweeted-about shows of 2018.

The series follows a group of people living together in a house where they are recorded 24/7 by 94 HD cameras and more than 113 microphones. Someone is voted out of the house each week, and the last remaining houseguest receives the grand prize of $500,000.

Host Julie Chen Moonves first hinted at a premiere date announcement with a teaser on May 16, and on Monday, she tweeted about the two-night premiere with a photo of herself on a skateboard.

Big Brother, Season 21 Premiere, Tuesday, June 25, 8/7c, CBS