As the official astrologer for 20th Century Fox Studios, Ms. Jillson was consulted on the best opening days for Fox movies. She picked the opening date for 1977's "Star Wars," which is the second-highest grossing movie ever.

In the 1970s and 1980s, Ms. Jillson made numerous appearances on television and radio shows. Besides Hollywood clients, Ms. Jillson made astrological forecasts for Ford Motor Co. and the Los Angeles Dodgers as part of her duties at KABC Radio.

In 1988, Ms. Jillson was linked to the Reagan White House after former chief of staff Donald T. Regan wrote in a book that first lady Nancy Reagan consulted astrologers.

Ms. Jillson contended that she advised Reagan campaign aides to select George H.W. Bush as Ronald Reagan's running mate in 1980. Ms. Jillson said she "spent a lot of time" at the White House after the March 1981 assassination attempt on the president. (White House spokesman Marlin Fitzwater said at the time that the Reagans did not know her.)...

"She had a complex and very intellectual approach to astrology," he said.