Kristen Stewart's bottom lip = tasty. | EW.com

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Kristen Stewart's bottom lip = tasty.

We all have nervous ticks. I, for one, tend to play with my earrings when part of an awkward situation. (I do this a lot, considering most of my interactions are awkward.) But it looks like Twilight star Kristen Stewart has incorporated her tick – bottom lip-biting – into her bag of acting tricks. Just take a look at College Humor’s entertaining compilation of scenes featuring the young starlet’s lip-chomping:

This, naturally, brings up the question: Is Stewart’s lip gloss really that tasty, and if so, where can I get some? (And what flavor is it?! Any guesses?) And do any other actors boast aggravating on-screen ticks?