Rose to prominence through her role on the hugely popular fantasy series Game of Thrones. Her film credits include 2006's 300 and 2013's The Purge.
She made her acting debut in the 1992 film Clothes in the Wardrobe.
She made a guest appearance on the show White Collar as the character Sally.
She married musician Peter Loughran in May 2007. The couple had one son together before divorcing in 2013. In 2015, she welcomed a daughter.
She became close friends with her former co-star Piper Perabo.