Hollywood is mourning the loss of legendary actress Diane Keaton , who died on October 11 at 79 in California after what friends of the star describe as a sudden and heartbreaking decline, RadarOnline.com can report. Article continues below advertisement

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"She declined very suddenly , which was heartbreaking for everyone who loved her," a friend of the Oscar winner told an outlet. "It was so unexpected, especially for someone with such strength and spirit."

Those close to the Annie Hall star say the past few months marked a quiet chapter in her life, as she withdrew from public view while surrounded by her closest family members.

"In her final months, she was surrounded only by her closest fam

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