She gained popularity for portraying Bridget Hennessy in the ABC sitcom 8 Basic Guidelines. In 2007, she started playing Penny in the Big Bang Theory. When she was developing up, she became a nationally-ranked beginner tennis participant and she produced her debut at Karin in the 1995 film Virtuosity. She made an appearance in the 2007 film TO BECOME Unwanted fat like Me as well as the 2014 film Writers Anonymous. She was involved to Josh Resnik for half a year starting in Oct of 2011, however they broke from the engagement in 2012. She was after that wedded to Ryan Sweeting from 2013 to 2015. In 2016, she started dating Karl Make. Her sister Briana competed in the Tone of voice in 2013. She starred in the strike show THE BEST Bang Theory, that was made by Chuck Lorre.