Kristen Stewart is still frowning -- and this time, for a good reason. The 'Twilight' actress is worried that her infamous affair with Rupert Sanders, the married director of 'Snow White and the Huntsman,' is affecting her ability to get work.

Apparently studio heads and casting directors share some sentiments with Robert Pattinson's sisters.

The National Enquirer (via Showbiz Spy) reports that awards season -- which included a snub from the Golden Globes -- gave Stewart an unfortunate reality check.

“Kristen’s feeling very sorry for herself,” a source said. “She knows she’s lost a lot of respect after what happened, but with the awards under way it’s just hit her how much her leading lady status has plummeted."

K-Stew suspects getting caught making out and possibly more with Sanders while she was still dating co-star Pattinson -- and, again, while Sanders was married to Liberty Ross -- had a lot to do with it. (In fairness, shouldn't Sanders be having a tougher time here?)

“She knew there would be a backlash from her cheating scandal, but she hoped the fact that Rob took her back might have placated a few people," the source added.

“Obviously that’s not been the case as there has been a certain cooling towards her now that the dust has settled. The scripts have definitely slowed down. And even the 'Snow White' sequel’s still in negotiations. She’s in a real state about it. She’s in a really dark place at the moment.”

While it'd be unfair to pigeonhole Stewart for an affair of which she was only one half -- and not the married half -- her acting hasn't endeared many people to her, either: Despite being incredibly bankable, she earned not one but two Worst Actress Razzie nominations this year.