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Jackie Collins, Joan Collins

AP Photo/Evan Agostini

Joan Collins took to Twitter late on Saturday to paid a special tribute to her sister, Jackie Collins.

The famed New York Times-bestselling London-born romance novelist died that day at age 77 after battling breast cancer. Jackie is survived by Joan, 82, their brother, Bill Collins, daughters Tracy, 54, Tiffany, 48, and Rory, 46, and six grandchildren.

"Farewell to my beautiful brave baby sister," Joan wrote on Twitter, alongside a photo of herself as a young child and Jackie as a toddler. "I will love you and miss you forever. Rest in peace."

Jackie Collins, Joan Collins, Childhood Throwback Pic

Twitter

The novelist and the Dynasty alum had gotten together in their native England just days ago, as seen in another photo Joan posted on Twitter.

Jackie was diagnosed with stage 4 breast cancer more than six years ago and revealed her illness to Joan only earlier this month, saying she did not want to burden her, People magazine reported.

Joan told the outlet she is "completely devastated" over her sister's death, adding, "She was my best friend. I admire how she handled this. She was a wonderful, brave and a beautiful person and I love her."