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KEEPS GETTIN' BETTER
Happy New Year! Christina Aguilera welcomes 2010 with open arms at Tao nightclub at Las Vegas's Venetian hotel, where she hosted and performed. Her resolution? "To continue having the best life ever."
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Sparks fly between NBA star Tony Parker and wife Eva Longoria Parker (in an Ina Soltani dress ), who counted down to midnight at the grand opening of her new Las Vegas nightclub Eve.
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BLACK & GOLD
Also making it a couples night in Las Vegas: deejay Joel Madden and Nicole Richie, who co-hosted a party at LAVO.
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At her New Year's Eve concert in New York's Madison Square Garden, Mariah Carey toasted 2010 with a glass of Champagne and a very special guest: husband Nick Cannon, who manned the deejay platform and ended the set by kissing his wife (not pictured).
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Back in Hollywood, Lauren Conrad and her girls – Stephanie Pratt (left) and Lo Bosworth – partied at Beso, but at least one of them was feeling the effects New Year's Day: "My legs are so sore from dancing!" Pratt Tweeted.
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NY STATE OF LOVE
Even among the million-plus revelers crowded into New York City's Times Square, Jennifer Lopez and Marc Anthony found a little space for romance under the bright lights.
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From "Let's Get Loud" to just kickin' it: J.Lo and Marc Anthony join host Ryan Seacrest on Dick Clark's New Year's Rockin' Eve to form their own Rockettes line in Times Square.
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Dad-to-be Robin Thicke held court at Las Vegas's The Bank nightclub in the Bellagio alongside wife Paula Patton, where he sang to hundreds of partygoers – including singer Leona Lewis (not pictured).
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Goodnight, 2009 ... Good morning, 2010! 90210 star AnnaLynne McCord sees in a new set of numbers while hosting a party at W South Beach. And who'd she kiss? She told guests her peck would be reserved for sister Angel. Aww ...
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In all black and with a devilish grin, New Moon star Kellan Lutz raises his glass to the new year at the JustJared.com party at Miami's Klutch nightclub.
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All hail the queen! Decked in a headdress, Lady Gaga counts down to midnight at the pool of Miami's Fontainebleau. She even stayed at the hotel like a queen – in a $35 million penthouse that rents for $15,000 a night!
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Here's The Situation: It's time to party! Snooki (third from right) and the rest of the Jersey Shore crew ring in 2010 on MTV News Presents: Top 9 of ‘09 before heading out to N.Y.C. club Tenjune.
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WHEN IN VEGAS ...
From the turntables to the mic, Pete Wentz celebrated rock-star style (tattoos and all!) at JET nightclub at The Mirage – but it seems he had something else on his mind, Tweeting: "Missing @ashsimpsonwentz in town."