"Twilight" star Kristen Stewart is moving on to a more adult genre of film.

Stewart, 19, who plays heroine Bella in the "Twilight" vampire film saga that's captivated the under-18 set, will appear in the nude in her new indie film, "Welcome to the Rileys," the New York Daily News reported.

Stewart, who stars in the film with ex-"Sopranos" mob boss James Gandolfini, will play a 16-year-old stripper and prostitute in the flick -- and her character, Mallory, will spend several scenes in the buff.

"It's an independent movie that nobody would normally see and now it's like, 'Oh, let's go see Bella in this stripper movie -- it'll be crazy,'" Stewart told WENN.com.

The "Adventureland" actress will also star in "Welcome to the Rileys" with Melissa Leo, who plays Gandolfini's wife.

Stewart will next play Joan Jett in "The Runaways" and is contracted to star in two more films in the "Twilight" series.

(China Daily/Agencies August 31, 2009)