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It was a BIG night for Kristen Stewart!

The sexy Twilight star cleaned up at tonight's MTV Movie Awards, taking home best actress AND best kiss with costar/BF Robert Pattinson. Way to go girl!

KStew and RPatz avoided sharing a kiss at the podium after winning their golden popcorn award, but they didn't hold back from showing their affection for one another out of the spotlight. The usually undercover pair was caught holding hands backstage!

We can't wait to see them actually tie the knot in the upcoming Twilight film, Breaking Dawn.

Check out video of Rob and Kristen holding hands backstage at the awards show, after the jump ...