Kristen Stewart in New Movie: Threesome Participant, Voyeur, Oral Sex Aficionado

Miley Cyrus isn't the only young star currently filming a role that may shock her fans.

As reported earlier in the week, the singer is leaving Hannah Montana far, far behind in LOL, a movie that will find her character losing her virginity; getting high; and waxing her private parts.

But it sounds like Kristen Stewart will see Miley's racy behavior - and raise her a hot sex scene or two!

• 
• 

Bye, Bye, Bella: Kristen Stewart's next role will focus on sucking, just not of the blood variety.

Supermarket tabloid Life & Style claims to have received a copy of the script for Stewart's new movie On the Road. In it, the Twilight Saga actress portrays a 16-year-old named Marylou, who is pretty much the anti-Bella in every way possible:

She participates in a threesome; requests to watch two people get it on; and brags about her love for oral sex.

While resisting the urge to make a joke about whether or not Robert Pattinson helped Stewart study for this role, we'll simply ask: why such a major change of pace for Kristen?

Says Ryan Schinman, media expert and CEO of the talent-branding agency Platinum Rye Entertainment:

"Many actors who are entering adulthood want to make their own mark and stop being seen as bubblegum, cookiecutter teen stars. Kristen likely wants to be taken more seriously as an actress - and show she's not afraid to break out of the mold."

Cyrus has used similar reasoning to explain her sexy outfits and adult film characters. But will young fans of these female stars follow them into such mature, racy realms? Only time and box office receipts will tell.