Kate Micucci (pronounced /mɨˈkuːtʃi/; born March 31, 1980) is an American actress, comedian, singer-songwriter, and artist. She is one half of the musical comedy duo Garfunkel and Oates. Her first major television exposure was her role as Stephanie Gooch in Scrubs. Later she portrayed Shelley in Raising Hope and Raj's girlfriend, Lucy in The Big Bang Theory. She also provides the voice of Velma Dinkley in Be Cool, Scooby-Doo!, and Sadie in Steven Universe.