Doris Day was one of the most popular stars of her era: first as a singing sensation in the 1950s and then as the top female box office star in the 1960s. Day, who died May 13, 2019 at the age of 97, could sing the lights out on hits such as "Sentimental Journey" and her signature song, "Que Sera, Sera (Whatever Will Be Will Be)." As the queen of '60s romantic comedies, she starred in hit after hit opposite leading men Rock Hudson, James Garner, and David Niven. She proved she could handle drama, as well, with an outstanding performance in Alfred Hitchcock's thriller "The Man Who Knew Too Much." She capped off her legendary career with a five-year-run on television as the star of  "The Doris Day Show." Click through the slideshow to see some of Doris Day's greatest moments.