Kristen Stewart's Oscars foot injury explained: She cut the ball of her foot on glass

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The jury's still out on whether Kristen Stewart was stoned -- or at least on pain meds -- at the 85th Academy Awards, but at least the cause of her foot injury has been explained. Beyond just being an "idiot," it turns out Stewart had hurt herself pretty badly just prior to Oscars night.

Her makeup artist, Beau Nelson, tells People that Stewart "cut the ball of her foot, quite severely, on glass two days ago." Though she was in "a little bit of pain" at the awards show, Stewart still managed to hop around for red carpet photos and present Best Production Design to "Lincoln" alongside Daniel Radcliffe.

When Stewart was asked on the carpet why she was on crutches, she answered simply, "I'm an idiot." That makes it sound like the injury was her own fault instead of something more severe. Whatever the reason, Stewart still looked gorgeous in her cream Reem Acra gown -- and at least she had a good excuse to wear flats.

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