Sylvia Miles, who earned two Academy Award nominations (for “Midnight Cowboy” and “Farewell My Lovely” and decades of glowing reviews for her acting before drawing equal attention for her midlife transition to constant partygoer and garishly flamboyant dresser, died June 12 in Manhattan. She was 94.

Despite her relish for the spotlight, Ms. Miles never published a memoir. When asked why by an interviewer in 2001, she replied, “I don’t have all the answers. My life’s been a mystery to me.”