Bettie Page, a legendary pinup girl whose photographs in the nude, in bondage and in naughty-but-nice poses appeared in men’s magazines and private stashes across America in the 1950s and set the stage for the sexual revolution of the rebellious ’60s, died Thursday in Los Angeles. She was 85.

Her death was reported by her agent, Mark Roesler, on Ms. Page’s Web site, bettiepage.com.

Ms. Page, whose popularity underwent a cult-like revival in the last 20 years, had been hospitalized for three weeks with pneumonia and was about to be released Dec. 2 when she suffered a heart attack, said Mr. Roesler, of CMG Worldwide. She was transferred in a coma to Kindred Hospital, where she died.

In her trademark raven bangs, spike heels and killer curves, Ms. Page was the most famous pinup girl of the post-World War II era, a centerfold on a million locker doors and garage walls. She was also a major influence in the fashion industry and a target of Senator Estes Kefauver’s anti-pornography investigators.

Image Bettie Page, with trademark heels and bangs, in the 1950s. Credit... Paula Klaw/Movie Star News

But in 1957, at the height of her fame, she disappeared, and for three decades her private life  two failed marriages, a fight against poverty and mental illness, resurrection as a born-again Christian, years of seclusion in Southern California  was a mystery to all but a few close friends.