LONDON, ENGLAND: Legendary US singer Frank Sinatra in a picture taken 07 March 1950 in London performs on stage at Palladium Theater. Frank Sinatra, born 12 December 1915, was a playboy who married four times, twice to famous actress, Ava Gardner and Mia Farrow. But he was deeply attracted to the actress; his biographer Kitty Kelley wrote that Gardner was the only woman he respected because he knew he could not dominate her. Sinatra got married for the last time in 1976 to Barbara Marx, widow of comedian Zeppo Marx of the four Marx brothers. Sinatra number his conquests, according to Kelley, among Hollywood's greatest beauties, including Marlene Dietrich, Judy Garland, Natalie Wood, Elizabeth Taylor and Victoria Principal. (Photo credit should read AFP/AFP/Getty Images)