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This is either the worst case of chapped lips we've ever seen or an alien life form!

On Thursday Renee Zellweger landed at Los Angeles International Airport, and after getting a peek at her eyes at the Academy Awards last month, it seems like there's something funky going on with her mouth now. Seriously, what's happening to the 43-year-old star's face? She's changed so much over the years, she doesn't even look like the same person anymore!

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Shortly after the Oscars in late February, In Touch magazine spoke to plastic surgeon Dr. Steve Fallek, who said, “In addition to having many injectables in her face, [Renee] also looks as if she’s gotten her lips plumped.” However, a rep for Renee shot down the article, saying it was “not true.” But if it wasn't plastic surgery, what HAS she done to her once-stunning looks?