What Frightened Kristen Stewart Most During 'On The Road?'

What scared Kristen Stewart during the filming of Kerouac’s “On the Road?”

Was it the fact that she got all naked and the whole world is bracing to see her lady bits?

Nope.

How about the fact that she and sexy co-star Garrett Hedlund have to get it on in front of the camera, the film crew, and a nosy audience? All naked, and such?

Nope. Not phased. Apparently, more bemused than worried by the whole process of the on-screen simulated sex.

The “Twilight” star said this: "To be honest, I think if you were to isolate the scenes, it's fairly ridiculous watching yourself fake have sex. But within the movie, watching the movie, I do get so caught up in this one. I've seen it three times, and that’s not typical for me."

So what is it that made little Kristen’s heart beat faster with fear?

It was the dancing scene, already iconic in images, where K-Stew shakes those pink-button-up-covered yoo-hoos, looking lost in the music.

"The dancing scene was so much more terrifying than any of the sex scenes were for me. I was so scared of it. We crammed, I think, 60 extras into a tiny little room. Literally, I could feel the floor vibrating. It was so f–king cool. But I was terrified."

“On The Road,” also starring Sam Riley and Amy Adams, hits theaters December 21st, so you can decide for yourself which scene Stewart nailed. Was it the bareness that seemed more natural, or did she sway to the beat more convincingly?