According to her manager, the actress died peacefully in her sleep.
Kidder recovered and continued acting all the way up until previous year, when she appeared in her final film, an indie mafia movie called The Neighborhood.
"She was courageous about everything", she said.
In 2016, Kidder told entertainment website Hey U Guys that her chemistry with Reeve was authentic "because we came from similar backgrounds and he looked like one of my brothers". "There was nothing to be ashamed of". The only people who get how weird it is are other famous people.
In mid-April 1996, her family in Montana reported her missing.
Kidder is survived by her daughter, Maggie McGuane, whom she had in 1976 with her then-husband, Thomas McGuane, and Maggie's two children.
However, as the months and years went on, Kidder didn't shy away from talking about her breakdown and her diagnosis with bipolar disorder. "That's how she wanted to live her life".
She also dated late Canadian Prime Minister Pierre Trudeau, directors Steven Spielberg and Tom Mankiewicz, and comedian Richard Pryor. "I just have to accept the fact that this is me, or I ain't gonna make it". Her first major studio film was 1969's Gaily, Gaily, a comedy that starred Beau Bridges. The weight of fame, three marriages, and preposterous medical bills became too much for her-or anyone, for that matter-to process. "She was a source of human strength in a film about superhuman strength". Additionally, Kidder starred in The Amityville Horror in 1979, Heartaches, and a slew of other movies and TV shows. He was complicated, very smart, really smart, and he knew he'd done something meaningful.
The official account for DC Comics, which has published the adventures of Superman since 1938, shared a message Monday afternoon about Kidder's passing. Kidder also spent time growing up in Labrador City, Newfoundland, and Labrador. She twice won the Canadian Screen Award (later renamed the Genie) for best actress. Kidder was to be a guest on a panel scheduled for 3 p.m. Saturday, May 19, in Speaker Room 5 celebrating the 40th anniversary of Superman: The Movie. We didn't think they'd be writing books about us in 30 years.
Lois Lane is great at her job and doesn't take flak from anyone.
"She led the way brilliantly", Hatcher wrote.
"On-screen she was magic".