What a difference a week makes! After Nicole Kidman’s busty appearance and swollen lips were the talk of the Country Music Awards on November 11, last night at the American Music Awards, the Oscar winner covered up in an asymmetrical Balenciaga gown — and her lips looked a little less plumped, too.

Although Nicole Kidman claims to have never had plastic surgery, an insider tells BettyConfidential that the star has been telling friends that she’s not happy with the way she looks at the moment — and it’s because of a cosmetic procedure gone wrong.

“She had her lips done and she wasn’t happy with the results,’’ says the source. “Her upper lip was noticeably swollen and she was calling herself ‘trout lips.’ And, now that everyone has been picking up on it, she's been freaking out. But she'll never publically admit she had any work done.''

“To be honest, I am completely natural,’’ Nicole told Marie Claire magazine in 2007. “I have nothing in my face or anything. I wear sunscreen and I don’t smoke. I take care of myself and I’m very proud to say that.’’

At the Country Music Awards earlier this month, the 42-year-old was photographed busting out of her L’Wren Scott gown. The actress confessed to Ladies Home Journal recently that nursing 1-year-old daughter Sunday Rose had given her bigger boobs, and said “when you’ve had a slightly androgynous body your whole life, having breasts is a nice feeling!”



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But she wasn’t about to discuss her boobs — or her lips — on the red carpet at the CMAs and rushed inside, leaving her singer hubby, Keith Urban, looking around for her and asking, “Where is she?”