Donna Summer -- the Queen of Disco -- died at 63 years old yesterday morning, May 17th after a battle with cancer ... . A few sources are telling us Donna believed she contracted it by inhaling toxic particles after the 9/11 attack in New York City.
Summer was a 5-time Grammy winner and six American Music Awards, and charted three multi-platinum albums.
In 2009, she sang at the Nobel Peace Prize Concert honoring President Barack Obama in Oslo, Norway.
In a statement released by the White House, Obama said: "Her voice was unforgettable, and the music industry has lost a legend far too soon.
Our thoughts and prayers go out to Donna's family and her dedicated fans. Donna Summer music will always be in our hearts.