Oops! Kristen Stewart Accidentally Smacks Robert Pattinson

 Lester Cohen/WireImage.com

In typical Kristen Stewart fashion, the 20-year-old actress had a series of awkward moments at Wednesday's People's Choice Awards in L.A.

The Twilight star kicked off the night when she beat out Angelina Jolie, Jennifer Aniston, Katherine Heigl and Julia Roberts for Favorite Movie Actress. As the Reem Acra-clad starlet made her way to the stage, her costar Taylor Lautner came to her aid when she had trouble climbing the stairs in her Jimmy Choo peep-toes.

After fumbling her acceptance speech, an onlooker tells UsMagazine.com that the klutzy actress nearly wiped out as she excited the stage.

Things got even more uncomfortable when host Queen Latifah asked the Twilight trio (including Stewart's longtime love Robert Pattinson) to stand up and wave to the audience.

"Kristen accidentally smacked Rob upon standing," the onlooker tells Us. "She mouthed, 'Oh my God! Sorry!" and got even more uncomfortable than she already was."

Though her nerves got the best of her, fans don't seem to have a problem with Stewart's frazzled demeanor: The Twilight Saga: Eclipse picked up four trophies, including Favorite Movie and Favorite On-Screen Team.

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!