Her son,Voguetheater critic Adam Green, confirmed his mothers death Sunday on Twitter.
My sister Amanda Green and I had to say goodbye to our beautiful mother today.
Ill miss her more than I can say, Green wrote.
Credit: Jim Spellman/WireImage
Newman also co-wrote her one-woman musical,The Madwoman of Central Park West.
While shes best known for her theater career, Newman appeared in many television and film projects as well.
The experience led to her activism surrounding the disease and womens health issues in entertainment.
She was married to the late composer and screenwriter Adolph Green for 42 years.
She is survived by her two children, Adam and Amanda.
Representatives for Newman did not immediately respond to EWs request for comment.
