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LOS ANGELES, CA - FEBRUARY 20: Actress Laura Spencer arrives at the CBS's 'The Big Bang Theory' Celebrates 200th Episode at the Vibiana on February 20, 2016 in Los Angeles, California. (Photo by Jennifer Lourie/Getty Images)

LOS ANGELES, CA - FEBRUARY 20:  Actress Laura Spencer arrives at the CBS's 'The Big Bang Theory' Celebrates 200th Episode at the Vibiana on February 20, 2016 in Los Angeles, California.  (Photo by Jennifer Lourie/Getty Images)