Superman actress Margot Kidder has passed away. According to Deadline, the 69-year-old actress died at her home in Livingston, Montana on Sunday, May 13. The Franzen-Davis Funeral Home did not reveal her cause of death.

Kidder is best known for portraying fearless journalist Lois Lane in Superman through Superman IV. While her turn as the character garnered praise from across the globe, Kidder herself wasn’t always so positive. Following the success of these films, she did not mince words regarding her thoughts and fears during the filming of Superman and how surprised she was when she ended up liking it. In a 2016 interview with HeyUGuys, Kidder told reporter Thomas Alexander that she expected the film to flop but promptly renegotiated her multi-picture contract after the success of the first film.

In addition to her Superman role, Kidder appeared in the Gene Wilder-led Quackster Fortune Has A Cousin In The Bronx, Shoot the Sun Down opposite Christopher Walken, The Amityville Horror, and many other films and television shows throughout the ’60s, ’70s, and ’80s.

No details regarding the funeral service have been released.