Kristen Stewart 'turns Robert Pattinson on' with sexy 'Camp X-Ray' PHOTOS: Jennifer Lawrence worried boyfriend Nicholas Hoult will cheat with 'Twilight' starlet?

Kristen Stewart stars in the new drama film "Camp X-Ray" - and the "Twilight" starlet looks hot as an American soldier!

Check out some more photos from the "Camp X-Ray" movie set here. Wonder if Robert Pattinson is proud of his on-and-off again sweetheart!

The film will premiere at the 2014 Sundance Film Festival later this winter. Here's a brief plot description from IMDB:

A young American soldier Cole (Kristen Stewart) has been stationed at Guantanamo Bay detention camp where she befriends a Muslim man in charge, prisoner Ali (Peyman Moaadi), who has been imprisoned for eight years. 

K-Stew and R-Patz are both busy at work in Hollywood, but rumors suggest that Robsten's actually back together... what do fans think about that?

Meanwhile, gossip has it that Jennifer Lawrence might not be the biggest fan of Stewart... particularly because of her "man-stealing" tendencies.

The "Hunger Games" beauty is currently dating actor Nicholas Hoult. The "X-Men" cutie AND Stewart are allegedly "in the running" to star together in the upcoming sci-fi flick, "Equals." They would be lovers, of course.

But J-Law is not having it.

"She doesn't trust her," a supposed source tells Star magazine. Especially after Stewart's highly-publicized cheating scandal with "SWATH" director Rupert Sanders.

In fact, Lawrence might be competing with K-Stew for the role. This is all hearsay from Hollywood Life, of course, so who knows if it's true.

What do Mstars fans think about that?