Ariana Grande Biography Ariana Grande born on June 26, 1993 is an American model, actress, and singer. She is best known for her role as Cat Valentine on Victorious. Victorious is an American television sitcom created by Dan Schneider for Nickelodeon. The series revolves around aspiring singer Tori Vega, portrayed by Victoria Justice, who attends a performing arts high school while getting i... more.