Wilde 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 was strongly considered to play Bond girl Vesper Lynd in the 21st Bond film Casino Royale but Eva Green eventually won the role.