Kelly Kapowski is a fictional character in the U.S. television series Saved By The Bell, played by Tiffani-Amber Thiessen. In the show, Kelly was the most popular girl in school and was head cheerleader and captain of the volleyball, swim, and softball teams. Though a good student and role model, Kelly did find herself sentenced to detention on a couple of occasions. She also was the love interest of lead character Zack Morris.