Director Walter Salles' adaptation of Jack Kerouac's classic novel "On the Road" features no small amount of risk-taking. Kristen Stewart is very much involved in said risks, appearing topless at points in the film. But to hear the "Twilight" star say it, there wasn't as much fear involved with her on-screen nudity as one might expect, largely because of the environment her director created on set.

"It didn't bother me," Stewart told MTV News as the Toronto International Film Festival. "You can do no wrong with [Salles]. He puts so much inside of you. In the four-week rehearsal process, it was okay to ask any question, to bring up any story, to really overanalyze everything and intellectualize everything."

"Once we got on set, it was so about just breathing and letting it happen. He put so much trust in us," she continued. "So it was like, 'OK, so I have to take my clothes off?' It's so not a big [deal]."

It might have been a big deal if Stewart were still in her teens. The "Breaking Dawn" actress was 17 years old when she first committed to the project in 2007. Now at 22, she feels much more comfortable with the risqué subject matter.

"I should have definitely been older than 17 while playing this part, absolutely," she said. "[My performance] would have been done very differently if I was younger. I wouldn't have played the part, obviously."

But part of why Stewart embraced the role of Marylou, topless scenes and all, was a desire to explore the fearlessness of the world Kerouac wrote about in his novel. "I don't want this to be misconstrued in anyway, but you do want to get as close to an experience as you can," said Stewart. "Anything that feels guarded, in this particular movie especially, would just be so against the spirit of it."

Check out everything we've got on "On the Road."