Watch Olivia Wilde Explain Cowboys & Aliens Wet T-Shirt and Change-Up CGI Nipples

Not only is Olivia Wilde open to appearing partially nude in movies -- as she does in Cowboys & Aliens and the upcoming Change-Up, but she is totally down to talk about said partial nudity at length in interviews. Earlier this week, she admitted that her own exposed behind in the latter film was a surprise, even to her, and the other night on a special Jon Favreau-directed episode of Jimmy Kimmel Live!, the actress told the host (and all of America) about the CGI movie magic involved in her topless Change-Up scene with Ryan Reynolds.

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