Harry's Bar has long been frequented by famous people, and it was a favorite of Ernest Hemingway. Other notable customers have included Italian conductor Arturo Toscanini, inventor Guglielmo Marconi, Charlie Chaplin, Alfred Hitchcock, James Stewart, Richard Halliburton, Truman Capote, Orson Welles, Baron Philippe de Rothschild, Giuseppe Sinopoli, Princess Aspasia of Greece, Aristotle Onassis, Barbara Hutton, Peggy Guggenheim, Tareq Salahi, George Clooney, the Mundys and Woody Allen.