‘Who’s The Boss?’ Actress Katherine Helmond Dead at 89

Katherine Helmond is most famously known for her portrayal of Mona Robinson in "Who's The Boss." She is survived by her husband Christian, whom she was married to for 57 years.

Helmond landed the role of Robinson on the popular sitcom in the eighties, and also had a starring role in the 1970s soap opera, "Soap."

She won 4 Best Actress Emmy nominations for her portrayal of Jessica Tate and went on to win a Golden Globe for the role in 1981.

Helmond's role as the promiscuous Mona on the "Who's the Boss" earned her critical acclaim, as well as two Supporting Actress Emmys.

Alyssa Milano starred on the show as well and was devasted. She said on Twitter:

“Katherine Helmond has passed away, my beautiful, kind, funny, gracious, compassionate, rock. You were an instrumental part of my life. You taught me to hold my head above the marsh! You taught me to do anything for a laugh! What an example you were! Rest In Peace, Katherine.”

Helmond met her husband, David Christian, at the Hampton Playhouse Summer Stock Theater. He worked as set designer and she was leading lady.

The couple tied the knot in the early sixties and was one of the very few Hollywood romances that survived the brutal industry. They remained married until her death.

Tony Danza, her co-star on "Who's The Boss," told Deadline that he will "miss her so terribly. Just a month before her death, he played "I Go To Pieces" for her on the ukelele.

A memorial service is being planned for family and friends to celebrate her life and career.