Jessica Biel hates getting glammed up.
"When I see myself in pictures with makeup on, even to this day, I think it looks weird," Biel, 27, admits in the February issue of Vogue. "My eyes get squintier and smaller."
The Valentine's Day star -- who recently climbed Mt. Kilimanjaro -- says she's "playing a character" every time she's photographed on the red carpet.
"As soon as I get off that thing I think, 'Oof, wipe that gloss off,'" she admits. "I’m wiping and wiping and pulling my hair out and trying to change my outfit. I’m immediately trying to get comfortable. It’s really a part I play."
Not that on-again beau Justin Timberlake (whom she began dating in 2007) minds her dressed down.
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"Pretty is cool, but it's not really about looks for me," he once said. "It's more about personality. I like a girl with a good sense of humor, who's humble and sensitive."