Update: CNN has also confirmed Marie's death with her manager.
Update II: People Magazine, the New York Daily News, the Palm Beach Post, and several other sources have now confirmed Marie's death. The Palm Beach Post article, written by Rhonda Swan, is a touching tribute. This remains a breaking news story.
Update III: CNN has published a more extensive story regarding Marie and her untimely death. While the cause of death remains unknown, her publicist states that she suffered a grand mal seizure last month.