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Known for her deliriously infectious tunes, over-the-top ensembles and wild romance with Russell Brand, Katy Perry is this season's hottest item! And after her chart-topping summer filled with campy concerts, this brunette bombshell just can't be stopped!

Famous for her funky fashion sense and tongue-in-cheek get-ups, take a look at the sexy lady's high octane style!

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Burning calories! Bench pressing! Breakdowns!

"The Biggest Loser" is back for its tenth season! Get an eyeful of the 21 new contestant hopefuls vying to win a spot at the ranch, take home the $250,000 grand prize -- and make it skinny! Hoping to broaden its reach this season, "The Biggest Loser" is trying to motivate communities with its new theme, "paying it forward," by leading community fitness challenges that the contestants will also compete in.

This season's myriad of contestants run the gamut from a high school teacher from Maryland who has recently suffered a family tragedy to a background vocalist for Beyonce, looking for a physical transformation. But who has what it takes to lose big? Tune into "The Biggest Loser," premiering Sept. 21 at 8 p.m on NBC to find out!

We posted pictures of Kim Kardashian and her mom Kris Jenner skyping in London, England and visiting the Mona Lisa in Paris, France. Now, we have pics of the jet setters at one of their latest stops -- Capri, Italy. Click to see the mother/daughter duo trying out the local cuisine and the fashion.

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From the MTV Video Music Awards to Mercedes-Benz Fashion Week, this week had its fair share of fashion tops and flops. Pick which outfits make your day, or need to go away. You decide!

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She's the talk of 'The Town'!

On and off screen, "Gossip Girl" star Blake Lively is known for traipsing through the streets of NYC with her head-turning fashions. From jaw-dropping necklines to glittering minis and a love of bold colors, the trend-setter has quickly made a name for herself in New York's elite style scene with her eye-catching ensemble.

Now the teen-drama queen is turning it up a notch with her sexy turn in the fall's hottest crime drama, 'The Town', hitting theaters Friday, Sept. 17.

Take a look at Blake Lively's stunning styles and see what all the gossip is about!

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From former "Top Models" to sexy "Gossip Girl" moms and hip-hop superstars, ET has got Us Weekly's oh-so-hot list of the 25 most stylish New Yorkers. Get an eyeful of the top 25 fiercest fashionistas taking a bite out of the Big Apple!

So which dazzling dresser topped the style savvy short list? Take a look!

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Socialites, fashionistas and Hollywood's hottest descended upon the glittering Big Apple for the style event of the season -- Mercedes-Benz Fashion Week! Take a look at the wild and wacky fashions from celebs from all over the globe as they rocked out all over NYC in some sassy and simply strange fashions!

Take a look!

Kim Kardashian just posted pictures of her trek to Europe and we have them. Click to see Kim trying out shoes in London, smiling (with her mom Kris Jenner) before one of the world’s most famous ladies, and who did she skype while she was there?

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Ashton Kutcher and Demi Moore continue to show their united front via Twitter, despite Star magazine's cheating allegations. A young woman named Brittney Jones, 21, is alleging to the magazine, on newsstands Friday, that she slept with Ashton. "He's a great lover," Brittney told the tabloid. "It was tender and nice -- not some random sex act."

Star alleged earlier this summer that Ashton was seen with yet another 20-something at a Los Angeles restaurant. This led to the married actor tweeting implications that he could be taking legal action against the publication. His lawyer issued a statement to UsMagazine.com, saying in part, "Star Magazine continuously publishes lies about Ashton Kutcher..."

ET offers up a timeline of tweets and TwitPics sent out by both Ashton and his wife Demi amid this alleged cheating scandal.