Olivia Wilde found her nude scene in 'Cowboys & Aliens' "strange" and "crazy".

The 'Tron: Legacy' actress stars alongside Daniel Craig and Harrison Ford in the action movie, and she found it unusual to be stripping in front of so many people, especially when Daniel had to take a moment to look her "up and down" while she bared all.

She said: "It was kind of strange because I was half-naked in front of a bunch of people, including the crew, a bunch of Apache warriors, a bunch of cowboys, and Daniel Craig, who I had to stand in front of basically naked.

"He had to take a moment to sort of look me up ad down before covering me in a blanket. And I was like, this is crazy."

However, the 27-year-old beauty didn't mind the lack of make-up in the film - about a man in the mid-west in 19th century America who must fight off invading aliens - because it made it look more authentic.

She added to MTV News: "We were literally dirty because we were riding all day long out in the desert, and you get very dirty. But the dirtier everybody looked, the hotter they looked. It was a really good look, I think.

"The people in the Old West were very dirty. The thing that's unrealistic about our movie is all our teeth: We have good teeth; they didn't have good teeth. So, logic police will call BS on that."