Khloé Kardashian had a book signing in LA earlier this week and debuted a new look that has fans speculating that she's had plastic surgery.

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The 31-year-old's face looks noticeably different, and it's her skin that has everyone talking. While it's clear that she has quite a bit of contouring around her nose and cheeks, her face looks tighter – in some photos it almost looks like she can't physically smile.

Click through the gallery and judge for yourselves.