Yvonne was born to Polish immigrants and raised in Australia. She studied Performance at the University of Western Sydney's School of Contemporary Arts and graduated in 2003. In 2007, she made her big screen debut in Gone (2006). This performance caught the attention of casting directors in Hollywood. She decided to move from Australia to Los Angeles and, on her third day of arrival, she landed her breakthrough role as Sarah Walker in Chuck (2007).  played Hannah McKay on Dexter.