<Tr> <Th> Occupation </Th> <Td> Actress </Td> </Tr> <Tr> <Th> Years active </Th> <Td> 1996--present </Td> </Tr> <P> Alessandra Torresani (born Alessandra Olivia Toreson; May 29, 1987) is an American actress . She is best known for her portrayal of Zoe Graystone in the science fiction television series Caprica and Claire in The Big Bang Theory . Prior to 2007, she was credited as Alessandra Toreson . </P> <P> Alessandra Olivia Toreson was born on May 29, 1987 in Palo Alto, California . Her mother, Marcia Glow, was a CEO, while her father, James Sylvester Toreson, ran startup tech companies . She began studying dancing and singing when she was two years old . At the age of 8, she landed a job doing interviews between cartoons on The WB Television Network . She holds a black belt in taekwondo . </P>

Who plays claire on the big bang theory