Actress Katherine Helmond, best known for her Emmy- nominated work as Jessica Tate on the ABC sitcom "Soap" and as Mona Robinson on "Who's the Boss?," has died in Los Angeles at age 89, her talent agency announced today.
In a statement to The Hollywood Reporter, APA said Helmond died Feb. 23 at her Los Angeles home due to complications from Alzheimer's disease.
Helmond received four best-actress Emmy nominations for her work on "Soap," the soap-opera send-up that also starred Billy Crystal, Robert Guillaume and Richard Mulligan. She scored two supporting-actress nominations for her performance as Mona -- the man-crazy mother of Judith Light's character on "Who's the Boss?," which starred Tony Danza.
Helmond began her career on stage, and she earned a Tony nomination for her work in "The Great God Brown" in 1973.