Tron: Legacy star Olivia Wilde, 26, and her husband of eight years, Italian prince Tao Ruspoli, 35, have separated. “They have been living apart after trying for quite some time to make their relationship work,” a source told People magazine. The two eloped when Wilde was 18 years old. Wilde, who ranked #1 on Maxim magazine’s “Hot 100” of 2009, is a star of the hit TV series House, and will be seen on the big screen again in the upcoming sci-fi western Cowboys and Aliens opposite Harrison Ford and Daniel Craig.