Christina Aguilera's performance of the hit song "Moves Like Jagger" at the American Music Awards Sunday night was overshadowed by the singer's teeny-tiny bandage dress, which showed off her fuller figure and sparked more pregnancy rumors. Check out the pics! Plus, Blake Lively dons a see-through flapper frock, and Amy Poehler is honored at Variety's 2nd Annual Power of Comedy bash over the weekend.

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A somber-looking Ashton Kutcher steps out just hours after Demi Moore announces the couple's impending divorce, as a new, cryptic pre-split interview with Ashton is released. Plus, Kris Humphries makes his first post-split red carpet appearance, while Justin Timberlake and Jessica Biel reunite at the GQ Men of the Year Party.

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Ashton Kutcher and Demi Moore (Jim Spellman/WireImage.com)And another Hollywood marriage bites the dust. After weeks of speculation about their union, Demi Moore, 49, announced today that she will divorce her husband of six years, Ashton Kutcher, 33. Since the two often let us in -- perhaps a little too much -- on their lives via Twitter, the demise of the once lovey-dovey coupling of Ashton and Demi came as a surprise at first ... but recently it seemed all but inevitable.

The trouble began with reports that Ashton had gone astray while partying it up in San Diego on -- get this -- the night before his sixth wedding anniversary, while Demi was working in New York. Rumor had it that Sara Leal, 22, a local administrative assistant, was the other woman.

While the reports seemed to include a lot of details -- such as that a bodyguard took Leal's phone during the encounter -- Ashton denied them. Among other things, the "Two and a Half Men" star, who goes by @aplusk on Twitter, even linked to the Public Enemy song "Don't Believe the Hype" and sent out a defiant message: "When you ASSUME to know that which you know nothing of you make an ASS out of U and ME."

Kristen Stewart makes a major change to her designer gown for the London premiere of "Breaking Dawn." Plus, PETA is using a Los Angeles billboard to slam Kim Kardashian, and Niki Taylor welcomes a baby boy.

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People magazine has bestowed the title of "Sexiest Man Alive" this year to the actor Bradley Cooper. And the Web response has been, well, less than turned on. Comments on blogs across the Web have been pouring in, many of them favoring a different man for the title.

The arguments for Cooper include the 36-year-old's "tousled hair," "blue eyes," and fluent French. But those assets don't do it for many a disappointed lady…and man. A very unscientific poll on Yahoo! asked: "Is Bradley Cooper the sexiest man alive?" It received an overwhelming "no" vote. (Add your say here.)

Here's what the blog-o-sphere is saying: You could practically hear the great big sigh of sadness that Ryan didn't make the cover. Not Ryan Reynolds, that ab-tastic star who was named the "Sexiest Man Alive" in 2010. These disappointed fans wanted to see Ryan Gosling get the top honor. As one reader decried on Entertainment Weekly's blog Popwatch, "Ryan was robbed!!!" Another added, "This year's real SEXIEST MAN is

Inspired by Joseph Gordon-Levitt's portrayal of a cancer sufferer in the heartwarming film "50/50," a 26-year-old woman who's battling cancer in real life made a video asking the actor to go on a date with her. Think he'll say yes? Plus, Stacy Keibler wows in a plunging neckline, and Adele is on the mend following throat surgery.

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Bradley Cooper is named People's Sexiest Man of the Year. Ben Watts/People

You'd think that People magazine might run out of candidates for its annual Sexiest Man Alive one of these days. In the last decade alone, the publication has handed out the honor to outrageously attractive A-listers including Ryan Reynolds, Hugh Jackman, Matthew McConaughey, Jude Law, and Johnny Depp (twice!). But somehow they've managed to find yet another Hollywood hunk to serve as 2011's Sexiest Man Alive -- Bradley Cooper.

On this episode of "omg! NOW," we catch up with the one and only Robert Pattinson, who reveals his very un-movie star car! Plus, Kellan Lutz, Taylor Lautner, Ashley Greene, and many others from the star-studded premiere of "The Twilight Saga: Breaking Dawn - Part 1" in Los Angeles. You don't want to miss our exclusive black carpet coverage!

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