Kaley Christine Cuoco (/ ˈkeɪli ˈkwoʊkoʊ / KAY - lee KWOH - koh; born November 30, 1985) is an American actress. After a series of supporting film and television roles in the late 1990s, she landed her breakthrough role as Bridget Hennessy on the ABC sitcom 8 Simple Rules, on which she starred from 2002 to 2005. Thereafter, Cuoco appeared as Billie Jenkins on the final season of the television series Charmed (2005 -- 2006). Since 2007, she has starred as Penny on the CBS sitcom The Big Bang Theory, for which she has received Satellite, Critics ' Choice, and People 's Choice Awards. Cuoco 's film work includes roles in To Be Fat like Me (2007), Hop (2011) and Authors Anonymous (2014). She received a star on the Hollywood Walk of Fame in 2014.
who plays penny in the big bang theory
Kaley Christine Cuoco