Mandy Moore Pays Beautiful Tribute to Her Beloved On-Screen ‘Mom’ Diane Keaton

Mandy Moore is paying tribute to her screen mom and real-life hero, Diane Keaton. The “This Is Us” actress, who played Keaton’s daughter in the 2007 romantic comedy “Because I Said So,” shared an emotional message following Keaton’s death on October 11 at age 79.

(Photo by Kevin Winter/Getty Images)

“They say don’t meet your heroes, but I got to work with one of mine and even call her ‘mom’ for a few months,” Moore wrote on Instagram, posting a still from their film together. “An honor of a lifetime.”

A spokesperson confirmed Keaton’s passing to People, noting she is survived by her children, Dexter and Duke. No further details about her death were shared.

‘What an Incandescent Human’

Moore expressed her deep admiration and love for Keaton. “What an incandescent human Di is and was,” she continued. “I am so sad she’s gone for all the reasons but also because it felt like she’d be here forever, dazzling us with her talent and charm (and her style, c’mon)!!! One of the very best to ever do it. All my love to her children and loved ones.”

Her post captured the affection so many in Hollywood felt for Keaton, a star known for her humor, warmth, and timeless authenticity.

Costars Celebrate Her Spirit

Actress Kimberly Williams-Paisley, who also played Keaton’s daughter in “Father of the Bride,” shared her own tribute. “Diane, working with you will always be one of the highlights of my life,” she wrote. “You are one of a kind, and it was thrilling to be in your orbit for a time. Thank you for your kindness, your generosity, your talent, and above all, your laughter.”

Like Moore, Williams-Paisley remembered Keaton as joyful, kind, and full of life.

Keaton’s “First Wives Club” costar Bette Midler also honored the Oscar winner’s legacy.

“I cannot tell you how unbearably sad this makes me,” Midler shared on Instagram. “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!”

Midler described Keaton as “brilliant, beautiful, and extraordinary,” reflecting how deeply her charm and sincerity touched those around her.

From “Annie Hall” to “Because I Said So,” Diane Keaton’s career embodied courage, humor, and authenticity. As Mandy Moore lovingly wrote, she was both a “screen mom and real-life hero” and “one of the very best to ever do it.”

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