If you are one of those diehard fans of Kristen Stewart who is all smitten by her simplicity, you might have to think again.

The simple and sweet Bella Swan from Twilight has just had a personality makeover and appears like a totally different person in the trailers for her new film, On the Road.

The actress has shown her other side and gone topless while sitting in a car next to Garrett Hedlund and Sam Riley, who also are shirtless.

The Walter Salles-directed movie is an adaptation of Jack Kerouac's 1951 novel.

Apart from Kristen, Hedlund and Riley, the film's other cast include Amy Adams, Viggo Mortensen, Kirsten Dunst, Steve Buscemi, Terrence Howard and Elisabeth Moss.

The movie is set to premiere at the Cannes Film Festival later this year.

Even if Kristen Stewart has suddenly turned racy and perhaps is looking for an entirely different role from the Twilight Saga, her character as Bella Swan has been already immortalized as Barbie dolls.

Stewart has Snow White and the Huntsman and On The Road in her kitty right now while Pattinson is promoting Bel Ami and Cosmopolis.

Watch the trailer here: