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JINGLE BELL ROCK
Christina Aguilera brings her vocal fireworks to New York's Rockefeller Center, where she rehearsed for the 74th annual Christmas tree lighting extravaganza Wednesday afternoon. The special – which also includes performances by Taylor Hicks, Sarah McLachlan and Sting – airs Wednesday at 8 p.m. ET on NBC.
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Kevin Federline steps out in Beverly Hills, where he dined with his attorney Mark Vincent Kaplan at celebrity eatery Mr. Chow on Tuesday.
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PUMP IT UP
Meanwhile, Federline's estranged wife Britney Spears causes a mini traffic jam Tuesday night at a Santa Monica gas station, where she and a girlfriend refueled before continuing their evening at the Loews Hotel.
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Paris Hilton hooks back up with Nicole Richie on Tuesday for the unveiling of Volkswagen's new compact SUV, the Tiguan, in Los Angeles. Next up for the duo: filming the fifth season of The Simple Life.
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With his divorce finalized, Christian Slater sets his sights on the single life as he mingles with Jaime King and Zooey Deschanel at the Volkswagen party on Tuesday.
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Gwen Stefani sits down with her Canadian fans during an appearance on MuchMusic's Live@Much show to promote her new CD The Sweet Escape in Toronto on Tuesday.
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'HARD' TO KILL
Yippee-ki-yay, John McClane is back! A blood-splattered Bruce Willis calls for a time out while filming Live Free or Die Hard (the fourth installment in the popular Die Hard action franchise) in Pasadena, Calif., on Tuesday.
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POINT AND SHOOT
Kate Bosworth shares a touching moment with costar Keri Russell as the two actresses continue filming the drama The Girl in the Park in New York City on Tuesday.
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MAN OF THE PEOPLE
George Clooney cuts quite a figure in an all-black ensemble on his way to The Late Show with David Letterman in New York on Tuesday. The actor stopped by to chat about his latest honor – being named PEOPLE's Sexiest Man Alive.
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A 'HEAVEN'-LY NIGHT
Jessica Biel raises a glass to partying with Vin Diesel at a holiday cocktail bash in Santa Monica on Monday. Just last weekend, the former 7th Heaven star was spotted in Las Vegas getting cozy with another guy: Yankees star Derek Jeter.
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DO A LITTLE DANCE
In a case of life imitating art, an animated Hugh Jackman is raring to go – just like his cartoon character Roddy! – while continuing European promotions for Flushed Away in Berlin on Monday.
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Who has the higher ground now? Michelle Williams gets the slightest height advantage over costar Ewan McGregor while filming The Tourist in downtown New York on Tuesday.
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Rapper and MAC cosmetics spokeswoman Eve does outreach for AIDS awareness (to promote World AIDS Day on Dec. 1st) during an in-store appearance in Harlem, N.Y., on Tuesday.
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Renée Zellweger, whose next film Miss Potter hits theaters in January, aims for comfort during some downtime in New York City on Tuesday.