Big Brother 27 Teases Friday Night Shake-Up & Summer Premiere For Its "Biggest Season in 25 Years!"

Big Brother 27 is celebrating 25 years on the air by announcing its new schedule, which includes a Friday night shake-up. Big Brother 27 welcomes back host Julie Chen Moonves, who's led the show since it premiered in 2000. Big Brother 27 follows Big Brother 26, during which Chelsie Baham was crowned the winner in a unanimous vote, and Makensy Manbeck placed second. In addition, Tucker Des Lauriers was voted America's Favorite Houseguest.