Diller has guest starred in THE BOLD AND THE BEAUTIFUL playing Gladys Pope. The Bell family friend also appeared in Lauralee Bell's hit web series FAMILY DINNER. In 1984 she made a memorable appearance in AS THE WORLD TURNS as Marcy's (Marisa Tomei) Fairy Godmother.
TMZ says she had recently fallen, hurting her wrist and hip, and her health had been on the decline ever since. She had been living in hospice care at her home.
Diller suffered a heart attack in 1999 and was later fitted with a pacemaker.
Phyllis began her career in 1952 -- and rose to fame with her TV specials alongside Bob Hope in the 1960s.
Watch her appearance in AS THE WORLD TURNS below opposite Marisa Tomei and THE YOUNG AND THE RESTLESS star Christian LeBlanc:
Diller's Gladys Pope in THE BOLD AND THE BEAUTIFUL in a scene with the late Darlene Conley's Sally Spectra.