911 was called at about 8:00 a.m. California time and Britney was rushed to Cedars-Sanai Medical Center in Los Angeles and was pronounced dead on arrival.
She had appeared in many movies in her career including Clueless, 8 Miles, and Don't Say A Word.
Update at 6:45 p.m.: The initial findings from the L.A. Coroner's office late today indicated no signs of foul play and it appears she died of "natural causes". We'll have to wait approximately eight weeks to find out what exactly those "natural causes" were.