Was Steel Magnolias based on a true story?

Yes, the movie "Steel Magnolias" was based on a true story. The story is based on the life of author Robert Harling's sister, Susan Harling Robinson, who died of leukemia at the age of 33. The film is set in the small town of Chinquapin, Louisiana, and follows the lives of six women who are close friends. The film's title refers to the strength and resilience of the women in the story.