[osreb]

The 56-year-old Chambers, whose real name was Marilyn Ann Taylor, was found dead around 9 p.m. Sunday in the 16000 block of Vasquez Canyon Road, said Assistant Chief Ed Winter of the coroner's office.

"She probably died of natural causes," Winter said.

Chambers broke into the porn industry by appearing in the 1972 film "Behind the Green Door," which was the first widely released pornographic film in the United States.

Her appearance in the film cost the then-aspiring model and actress her job as Procter & Gamble's Ivory Snow detergent girl, appearing on the soapbox with a baby and the caption "99 & 44/100% pure."

The Providence, R.I., native had a bit part in the 1970 Barbra Streisand film "The Owl and the Pussycat," but after establishing herself as a pornographic film star, she was never able to break into mainstream films.