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Big Brother became the first-ever primetime TV show to reach 1000 episodes, and the cast and crew – including lots of former houseguests – gathered together to celebrate!

On Thursday (August 27), after the live eviction of BB28‘s Mallory Aurichio, the members of the Big Brother team held a party on the Radford Studio Center lot in Los Angeles to mark the huge milestone (which earned them two Guinness World Records!)

Who attended the Big Brother 1000th episode party?

Host Julie Chen Moonves and executive producers Allison Grodner, Rich Meehan, and Chris Roach were all seen at the big event.

Past winners Rachel Reilly, Josh Martinez, Taylor Hale, Ashley Hollis, Chelsie Baham, Dan Gheesling, and Derrick Levasseur were photographed. The iconic Cookout alliance – Azah Awasum, Derek Frazier, Kyland Young, Hannah Chaddha, Tiffany Mitchell, and Xavier Prather – was also there!

And lots of other past contestants were also in attendance! We have photos of some of the party-goers, including past fan faves Paul Abrahamian, Britney Haynes, Janelle Pierzina, April Dowling-Cruise, Ovi Kabir, and Tommy Bracco, plus some house guests from more recent seasons including BB24‘s Joseph Abdin, BB25‘s Blue Kim, Reilly Smedley, Mecole Hayes, and Felicia Cannon, BB26‘s Quinn Martin, Cedric Hodges, Leah Peters, Cameron Sullivan-Brown, and Rubina Bernabe, and BB27‘s Jimmy Heagerty, Morgan Pope, Vince Panaro, Adrian Rocha, and Keanu Soto, BB28‘s Jason De Puy, more!

Browse through the gallery to see all of the photos from the Big Brother event…

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