Celebrities are mourning the loss of Diane Keaton, who died at age 79. People broke the news of her death on Saturday, October 11, confirming that The Godfather star died in California. Further details have yet to be released as her family asks for privacy during this difficult time. Bette Midler was one of the first stars to break their silence following news of Keaton's death. "The brilliant, beautiful, extraordinary Diane Keaton has died. I cannot tell you how unbearably sad this makes me," Midler, 79, captioned an Instagram post on Saturday. "She was hilarious, a complete original, and completely without guile, or any of the competitiveness one would have expected from such a star. What you saw was who she was ... oh, la, lala!" Ron Galella, Ltd./Ron Galella Collection via Getty Images Keaton's Father of the Bride costar Steve Martin shared a photo of her on X. "Loved!" he wrote. "La dee da, la dee da." Diane Keaton's Most Memorable Roles: 'The Godfather' and More Some stars - like Brad Garrett and Olivia Munn - reacted to the news via Instagram comments, sharing broken heart and crying face emojis. Others opted for lengthier messages to honor the late actress. Keep scrolling to see which stars have spoken out following Keaton's death: Julia Louis-Dreyfus Julia Louis-Dreyfus attends the National Breast Cancer Coalition's 18th Annual Les Girls Cabaret Emma McIntyre/Getty Images "She was a revolutionary actor-both comedically and dramatically," the Veep actress wrote via social media on Saturday. "She was a singular artist. I am so grateful to her and may she rest in peace. @diane_keaton #dianekeaton." Michael Douglas "RIP to my friend Diane Keaton. A heartbreaking loss of one of the greatest icons in our industry," Douglas wrote via Instagram. "I have so many fond memories of working with Diane on our film And So It Goes nearly twelve years ago. Sending my deepest condolences to the Keaton family during this difficult time." Mia Farrow "She was an absolutely wonderful actress- and a rare and fascinating person," Farrow, Woody Allen's ex-wife, wrote via Instagram alongside a black and white photo of the late actress. "Thoughts with her children and sisters. Rest in peace Diane." Abby Lee Miller "This was one of those Hollywood stories one can only dream about! I was in the middle of getting my hair done and Diane Keaton's children wanted a picture with me!" the reality TV star wrote via Instagram, recalling her chance encounter with the late actress. "Here's this brilliant screen legend standing in front of me right in Santa Monica asking if her kids could have a picture? Whaaaaat?!?! Of Course Ms Keaton ~ and may I have a picture with you? She will be missed by millions, yet her performances will continue to entertain audiences forever! Thank you ~ Diane Keaton." Reese Witherspoon Reese Witherspoon at "The Morning Show" Season 4 Premiere held at The Museum of Modern Art on September 09, 2025 in New York, New York. (Photo by Gilbert Flores/Variety via Getty Images) While on stage at her Shine Away event in Los Angeles on Saturday, Witherspoon opened up about how important Keaton was to her in her early career. "I just wanted to talk to you for one second because, and I'm gonna try to get through this without tearing up, but I don't know if you guys heard that Diane Keaton passed," she said shortly after taking the sage. "And I had to take a second to just really think about it because when I was 15 years old - Diane was really important she was one of my first mentors in this business - I was 15 years old and I was from Nashville, Tennessee, and I didn't know anybody and I came on, it was my second maybe my third movie audition ever, and I auditioned for her and she looked at me after ... and she goes, who are you?" Witherspoon went on to share how she responded wholeheartedly to the then-directer, telling Keaton, "I'm Reese Witherspoon. I'm from Nashville Tennessee." "She said, 'Are you making that up? That accent that you're doing?'" Reese continued to recall, before adding that Keaton told her, "Well, you're hired today, tomorrow [and] the next day. I don't know who you are, but I'm excited to have you." Melissa Joan Hart "There are some people you think will live forever and it took my breathe away to hear about Diane Keaton passing away today! He[r] body of work, her class, her style, her ability to be wildly talented and keep her private life out of tabloids is@to be respected and studied for generations," the actress wrote via social media on Saturday. "Thanks for the laughs and tears! From #BabyBoom to #SomethingsGottaGive, I've enjoyed every movie I've seen with her but I have to admit I've never seen #AnnieHall. I know what I'm doing this weekend now! #GodBlesstheFunnyPeople." KaDee Strickland "SOMETHING'S GOTTA GIVE was one of my first jobs, and I was privileged to work opposite one of my greatest heroes. @diane_keaton wore the cape the entire time," the actress, who worked alongside Keaton in her