Hollywood is mourning the loss of Diane Keaton, the quirky, brilliant, and completely irreplaceable actress who defined decades of film and fashion. She passed away at the age of 79 in California on October 11, 2025, leaving behind a legacy that has every corner of Tinseltown in grief.

Jane Fonda shared a heartfelt tribute, remembering Keaton as “a spark of life and light,” praising her limitless creativity and individuality. Robert De Niro expressed his sadness and shock, saying he was “not expecting her to leave us” and that she “will be missed.”

Mandy Moore, who played Keaton’s daughter in Because I Said So, wrote that working with her was “an honor of a lifetime” and called her “an incandescent human.” Rita Wilson honored Keaton’s artistry and spirit, calling her “a craftsman” and praising her dedication to beauty, creativity, and motherhood. She ended her message with, “May her memory be eternal.”

Reese Witherspoon remembered Keaton as one of her first mentors, recalling how the actress hired her on the spot when she was just 15. Fighting back tears, Witherspoon urged fans to honor Keaton by “being your unique, interesting self,” saying that’s exactly what Diane would have wanted.

Other stars, including Julia Louis-Dreyfus, Steve Martin, Goldie Hawn, Ben Stiller, Kimberly Williams-Paisley, and Paul Feig, also shared their grief. Louis-Dreyfus called her “a revolutionary actor,” while Hawn reminisced about their friendship and said, “You’ve left us with a trail of fairy dust… I’m going to miss the hell out of you.”

From her unforgettable performances to her trailblazing fashion and warm humor, Diane Keaton leaves behind an enduring mark on Hollywood and everyone who knew her.