An unofficial photo of Kristen Stewart as Marylou on the set of the long-in-development adaptation of Jack Kerouac's On the Road has landed online. The film co-stars Garrett Hedlund as Dean Moriarty, Sam Riley as Sal Paradise, Kirsten Dunst as Camille, Amy Adams as Jane, and Viggo Mortensen as Old Bull Lee.

Filming began on August 4th, and we received a press release announcing that Steve Buscemi, Elisabeth Moss (Mad Men), Alice Braga (Predators), Tom Sturridge (Pirate Radio), Danny Morgan (the TV show Off the Hook), and Terrence Howard.  However, we don't know which roles they'll be playing.  I'd be able to provide an educated guess but I haven't read the book yet.  It's currently sitting in a pile of other classic works of literature that I keep by my bed to make me feel bad about myself.

Hit the jump to check out the image and read the press release.  On the Road is due out in 2011.

Image courtesy of Eclipse Movie [via SpoilerTV]:

Here's the press release:

WALTER SALLES’ ON THE ROAD STARTS PRINCIPAL PHOTOGRAPHY

MK2 presents ON THE ROAD, a film by Walter Salles, adapted from  Jack Kerouac’s legendary novel by José Rivera.

The shooting started on Wednesday, August 4 and will continue until the end of the year in New Orleans, Mexico, Canada and San Francisco.

After the death of his father, Sal Paradise, an aspiring New York writer, meets Dean Moriarty, a young and dangerously seductive ex-con.  They hit it off immediately. Determined not to get trapped in a narrow life,  the two friends burn their bridges and hit the road : thirsting for freedom,  they discover the world, others and themselves.

ON THE ROAD is an MK2 production, produced by Rebecca Yeldham.

Executive producers are Nathanael Karmitz and Charles Gillibert.

The film is co-produced by American Zoetrope, VideoFilmes, Film4 and France 2.

MK2 is in charge of international sales.

CAST :

SAM RILEY, GARRETT HEDLUND, KRISTEN STEWART, KIRSTEN DUNST, VIGGO MORTENSEN, AMY ADAMS, STEVE BUSCEMI, ELISABETH MOSS, ALICE BRAGA, TOM STURRIDGE, DANNY MORGAN, TERRENCE HOWARD ...

CREW :

Director of photography ...    ERIC GAUTIER A.F.C

Production Designer .........    CARLOS CONTI

Costume Designer ............    DANNY GLICKER

Composer          .................    GUSTAVO SANTAOLALLA