'Superman' actress Margot Kidder dies in her sleep

Hollywood actress Margot Kidder, best known for playing Lois Lane in the "Superman" films in the 1970s and 1980s, has died at the age of 69.

Kidder's manager Camilla Fluxman Pines said the actress died peacefully in her sleep on Sunday at her home in Livingston, Montana while the cause of death was not given.

The Canadian-born appeared in more than 70 movies and TV shows, including "The Great Waldo Pepper," "The Amityville Horror" and the 2014 children's TV series "R.L. Stine's The Haunting Hour," which she won an Emmy award.

Kidder began her acting career in her 20s and shot to international fame playing the intrepid reporter Lois Lane in 1978's "Superman," opposite Christopher Reeve, and in three subsequent times.