The actress died in her sleep at her home on Sunday in Livingston, Mont., her publicist Camilla Fluxman Pines confirmed to Variety.
Superman, directed by Richard Donner and released in 1978, was a superhero blockbuster two decades before comic book movies became the norm at the top of the box office.
United States actress Margot Kidder, who played reporter Lois Lane in the "Superman" movies, has died at age 69, a statement from the funeral home handling her arrangements said Monday.
How to use YouTube's Take a Break feature
According to the report, the feature has been pushed by the company from the server side and is available only to some users. The device will have a dashboard that will help you keep track of the amount of time that you spent on each app.
Margaret Ruth Kidder was born in Canada and honed her acting skills on TV shows such as McQueen, Nichols, Banacek and Mod Squad before becoming a movie star.
American actor Mark Hamill posted, "On-screen she was magic. These are hard words to write, so simply - you will be so very missed, my dear Margot", he told SyFy.
Teri Hatcher, who played Lois Lane on the 1990s television series Lois & Clark: The New Adventures of Superman, said that it was "a privilege" to have shared a role with "wonderful actress" Kidder.
The Turkish President made a loud statement about Israel
Erdogan has called the country a terrorist . "Today is the day that humanity will show solidarity against cruelty and injustice". President Erdogan also said that the Turkish Red Crescent would deliver humanitarian aid to hospitals in Gaza .
She said she and Reeve, who was paralyzed in 1995 by a horsing accident, were like brother and sister, both in their affection and animosity for each other. "We didn't have to create a different reality". She even got vocal about how our modern day Superman movies took another popular actress, Amy Adams, and basically reduced her role as Lois Lane into nothing.
The Reeve Family and Foundation said it was "deeply saddened" by Kidder's death. Off-screen she was one of the kindest, sweetest, most caring woman I've ever known.
Advocate, activist, role model: there was a lot to like about Margot Kidder.
Late-Night Hosts Tee Off on Opening of US Embassy in Jerusalem
They gathered to protest Gaza's unrelenting humanitarian crisis and the inauguration of the U.S. Russian Foreign Minister Sergey Lavrov repeated Moscow's objection to the USA move.
That struggle became public in 1996 when she was found dazed and filthy in a yard not far from the studio where she once filmed parts of Superman. A spark of vivacious life in all of her films. At a time when the subject was still strictly taboo, she was fearless in talking about her own experiences in order to help others facing the same battle.