Kristen Stewart has said appearing topless in her new movie was "not a big deal".
The Twilight actress bares her breasts in On The Road, director Walter Salles' adaptation of the Jack Kerouac novel, but she told MTV that she wasn't worried about the scenes.
The 22-year-old said: "It didn't bother me. You can do no wrong with [Salles]. He puts so much inside of you. In the four-week rehearsal process, it was OK to ask any question, to bring up any story, to really over-analyse everything and intellectualise everything.
"Once we got on set, it was so about just breathing and letting it happen."
She said the filmmaker put "so much trust" in the cast, adding: "So it was like, 'OK, so I have to take my clothes off?' It's so not a big [deal]."
The tale was inspired by the travel experiences of Kerouac and his friend Neal Cassady, and Kristen plays free-spirited Marylou, the young bride of Garrett Hedlund's hedonistic character Dean Moriarty, who was based on Cassady.
The actress signed up for the cult story - which was recently screened at the Toronto International Film Festival - in 2007 and she admitted that it was a good thing that five years passed before she stepped into Marylou's shoes.
She said: "I should have definitely been older than 17 while playing this part, absolutely. [My performance] would have been done very differently if I was younger. I wouldn't have played the part, obviously."
On The Road also stars Sam Riley, Kirsten Dunst and Viggo Mortensen.