Jackie Collins Dies of Breast Cancer at 77

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Jackie Collins, one of the world's best-selling authors, passed away of breast cancer on Saturday. She was 77.

"It is with tremendous sadness that we announce the death of our beautiful, dynamic and one of a kind mother, Jackie Collins, who died of breast cancer today," the Collins family confirmed to ET in a statement. "She lived a wonderfully full life and was adored by her family, friends and the millions of readers who she has been entertaining for over 4 decades."

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The prolific author, who wrote 32 books that all made The New York Times bestsellers list, was diagnosed with stage 4 breast cancer more than six years ago, but she chose to keep her illness as private as possible.

Private services will be held for her family in both the United States and the United Kingdom. They ask that in lieu of flowers, donations be sent to the Susan G. Komen Breast Cancer Organization and Penny Brohn Cancer Care, respectively.

Collins is survived by her three daughters, Tracy, Tiffany, and Rory, her older sister, Joan, and her younger brother, Bill.

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Fans and friends took to social media to remember the legendary author.

"#RIPJackie Collins. I always loved our interviews," wrote Oprah Winfrey.

"Shocked & devastated at the death of @JackiejCollins," Sharon Osbourne tweeted with a picture of the two. "Loved & respected her. Thoughts & prayers go out to her family."

"An amazing woman," Little House on the Prairie star Melissa Gilbert tweeted of Collins. "Talented. Funny. Kind. One of my very favorite producers ever. She will be deeply missed."

"Thxs for the wonderful books," wrote comedian Loni Love, adding, "Rip."