Actress Sheila Allen has died at the age of 84. The widow of producer Irwin Allen passed away at her home in Malibu, California on Friday (15Nov13) after a long battle with pulmonary fibrosis. Allen began her career at the age of 10, when she started performing with professional opera singers in several shows in New York. The Poseidon Adventure star went on to appear in several Broadway and off-Broadway productions in the 1940s and 1950s. She broke into TV in the 1950s and starred in projects including The Towering Inferno, Alice in Wonderland and Lost in Space. She served as the president of Irwin Allen Productions for the past 20 years and was also very active with charities including the Los Angeles Opera, the Young Musicians Foundation and United Friends of the Children. Allen married Irwin in 1974 and they remained together until his death from a heart attack in 1991.