Thirlby has trained at the American Globe Theatre, spent a summer at the RADA, and holds a stage combat certificate from the British Academy of Stage and Screen Combat. In 2003, while still at high school, she was offered a role in The Secret - her first professional role. She plans to pursue a career on stage and screen.
Thirlby has appeared in movies such as United 93 and Juno. She also plays Aubrey on the television series Kidnapped. She has a number of films awaiting release, and is currently working on Uncertainty. She is attached to star in Jack and Diane opposite Ellen Page.
--Wikipedia
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