Countess Spencer died on Friday morning in her London home.
The late Princess Diana's stepmother, Raine Spencer, has died after a short illness, Spencer's family confirmed on Friday.
Countess Spencer died on Friday morning in her London home, her son, William Legge, the Earl of Dartmouth, confirmed to the BBC. She was 87 years old.
Spencer was married to Princess Diana's father, Earl Spencer -- her second husband -- from 1976 until he died in 1992. She married her third husband, Count Jean-François Pineton de Chambrun, in 1993, though they split three years later.
WATCH: Prince William on Princess Diana: 'I Still Miss My Mother Every Day'
Although Diana and Spencer's relationship was reportedly rocky in earlier years, the two eventually reconciled. In 1995, Diana's boyfriend's father, Egyptian billionaire Mohamed Al-Fayed, offered her a job as director of Harrods International and Harrods Estates.
Spencer talked about her stepdaughter at the 2007 inquest into Diana's death.
"She always said I had no hidden agenda," Spencer said, according to the BBC. "So many people, because she was so popular and so world famous, wanted something out of her. It was a very draining life."
Diana, and her boyfriend, Dodi Fayed, died in August 1997 after a car crash in Paris.
Diana's sons, Prince William and Harry, continue to honor their late mother's legacy 19 years after her death.
"When she died, there was a gaping hole, not just for us but also for a huge amount of people across the world," Harry told People in May. "If I can try and fill a very small part of that, then job done. I will have to, in a good way, spend the rest of my life trying to fill that void as much as possible. And so will William."
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