Olivia Jane Cockburn known professionally as Olivia Wilde, is an American actress. She has appeared in a number of television and film productions such as The O.C., The Black Donnellys, House, Tron: Legacy, Cowboys & Aliens, In Time, and most recently Drinking Buddies. She has appeared in the films The Girl Next Door, Alpha Dog, Conversations with Other Women and Turistas. She became known for her role on The O.C. as Alex Kelly, although she originally auditioned for the role of Marissa Cooper. She has also appeared in the Dashboard Confessional music video for "Stolen", and the French Kicks music video for "So Far We Are". She won the 2006 US Comedy Arts Festival Film Discovery Jury Award for Best Actress for Bickford Shmeckler's Cool Ideas (2006), and in 2008 at the Teen Choice Awards, she was nominated for the Teen Choice Award for Choice TV Breakout Star Female for House. Also in 2008, Wilde was honored alongside Jesse Eisenberg with the Vail Film Festival Rising Star Award.
Wilde has dual citizenship in the United States and Ireland.She derived her stage name "Wilde" from Irish author Oscar Wilde. She changed her surname while in high school, to honor the writers in her family, many of whom used pen names.She is a vegan,and was voted PETA's Sexiest Vegetarian Celebrity of 2010.