Paris Hilton traded her warm Sundance wear for something more minimal at the beach in LA yesterday. She was out on the sand to shoot ads for FILA, continuing her modeling gig for the brand. It wasn't just California that Paris was heating up over the past few days, as things in Park City apparently got steamy too. She was spotted getting cozy with MySpace CEO Chris DeWolfe, who she was rumored to have had a fling with while dating Benji back in August. Add that to the rumors that there might be yet another sex tape circulating of Miss Hilton, and cuddling up with a shirtless male model seems relatively tame.

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The star-studded inauguration parties continued last night at the Artists and Athletes Alliance Inaugural Honors Service Nation in DC. Tobey Maguire looked handsome in his suit while Jennifer Meyer covered her growing bump with her jacket. J Lo and Marc Anthony were all dressed up for the second time of the weekend, though Marc felt the need to show a lot more of his chest this time around. The celebrations are bigger than ever now that Obama has officially been sworn in, so hopefully the stars haven't had their fill of toasting our new President just yet.

More photos including Alicia Witt, David Arquette, and Fran Drescher if you just read more

• At just after 12 p.m. EST today, Barack Obama took the oath and was sworn in as the 44th President of the United States of America. Vice President Joe Biden took his oath a few minutes earlier. — CitizenSugar
• Marcia Cross revealed that her husband Tom Mahoney is battling cancer but at this point is "responding well to treatment." — E Online
• Lost in Space star Bob May passed away on Sunday at his home; he was 69. — LA Times
• ER actress Parminder Nagra married her longtime boyfriend, a photographer, in Hollywood on Saturday. — OK Magazine
• Amy Winehouse's father Mitch revealed that his daughter was "on death's bed" two times but is on the road to getting better now. — People

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The Huffington Post threw a pre-Inaugural Ball in DC last night to celebrate today's momentous occasion and find an excuse for another star-studded party. Arianna herself took the stage with will.i.am, and clearly the mood was joyful for the soiree. Demi and Ashton are still going strong after a long weekend of partying. Jessica Alba kept it festive with her blazer and Cash by her side. Pete Wentz didn't have Ashlee and Bronx with him but he is looking forward to telling him about it someday. After the Kids Inauguration Concert, the Jonas Brothers and Demi Lovato party-hopped their way to the HuffPost bash, and while they're too young to vote at this point, they'll have the memories of participating in this event forever.

To see more from the party including David Arquette, Dustin Hoffman, Ed Harris, the Jonas Brothers, and more, just read more

Some of our favorite rarely-seen famous faces were out at Sundance Film Festival yesterday. Zooey Deschanel and Joseph Gordon-Levitt premiered their anticipated – and completely precious looking — romantic comedy 500 Days of Summer. Jim Carrey and Ewan McGregor continued to hit up the parties in support of I Love You Phillip Morris. It wasn't all movie veterans — relative newbie John Krasinski debuted Brief Interviews with Hideous Men at the festival while Kristen Stewart hit a red carpet that wasn't for Twilight — check out all the Sundance news here. With so many celebrities in Park City and DC for the inauguration, LA must be pretty quiet this week.

To see more from the festival including Ewan McGregor, Robin Williams, Hugh Dancy, Seth Green, Lisa Kudrow and others just read more

Gisele Bundchen looked tanned and gorgeous modeling at Sao Paulo Fashion Week yesterday. Her trip home to Brazil includes some runway work but she probably had to field a "congratulations" or two from her fans. The newly engaged supermodel didn't flash any ring finger bling during the show, but we'll get to see it sometime as they're rumored to be on a fast track bringing us a celebrity wedding this year.

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