Celebrity Star Tracks - Monday, January 22, 2007 By People Staff Published on January 22, 2007 05:00 PM Share Tweet Pin Email Trending Videos 01 of 16 OOH LA LA Maxppp/Landov Christina Aguilera gives us her best Marilyn Monroe impression at the NRJ Music Awards in Cannes, France, on Saturday. The singer took home two trophies – for international female artist of the year and international album of the year for Back to Basics. 02 of 16 CLUB-HOPPERS AlphaX-MBF/X17 Despite reports that they had split, Britney Spears steps out with new man Isaac Cohen at Hollywood hot spot Cabana on Friday. The couple have been making the rounds: Last weekend, they stayed in a $40,000-a-night suite in Las Vegas. 03 of 16 IN SYNC Jason Merritt/FilmMagic A-swagging they will go! At the Sundance Film Festival in Park City, Utah, to promote his movie Black Snake Moan, Justin Timberlake hooks up with former 'N Sync-er Lance Bass at the Motorola Late Night Lounge on Saturday. They also spent a good portion of the weekend on the slopes – where Timberlake snowboarded and Bass skied. But before heading to Sundance, Timberlake partied in Las Vegas with ex Alyssa Milano and Eva Longoria. 04 of 16 BOARD BUDDIES Bauer-Griffin Cameron Diaz bonds on the beach with champion surfer Kelly Slater in Hawaii on Thursday. Diaz flew to Oahu to visit her longtime pal after getting into a heated confrontation with ex Justin Timberlake at a Golden Globes party earlier in the week. 05 of 16 BACK IN ACTION Ralph Orlowski/Getty Keith Urban straps on his six-string again during a Saturday performance on the German TV show Wetten, dass..?, his first post-rehab public appearance. "I'm feeling much better," he said on the program. "I got a lot of support from everybody in the last three months, lots of e-mails and cards and letters. It meant a lot to me, so danke schön. 06 of 16 IN THE BAG Mullen-Ramirez-Rilloraza/ JFX Jessica Simpson is one satisfied shopper after a spree at the Theodore boutique at L.A.'s The Grove shopping center on Friday. 07 of 16 GETTING TO KNOW YOU Scott Halleran/Getty New couple Mandy Moore and DJ AM, who according to reports are in the "early stages of dating," take their romance to Sundance on Sunday. Moore, in Park City to promote her comedy Dedication, performed a short concert the evening before at an event thrown by Jane magazine. 08 of 16 'DESPERATE' NO MORE Marion Curtis/Startraks Also at Sundance, Teri Hatcher – who says she's "totally in love" with her director beau Stephen Kay – finds the best seat in the house on his lap at the Marquee swag suite on Saturday. 09 of 16 ARM CANDY Ahado/X17 Mischa Barton gets a grip on musician boyfriend Cisco Adler during a stroll through Malibu on Sunday. 10 of 16 TEMPORARY LANDING Ramey An undercover Victoria Beckham returns to Madrid on Friday following a busy week of house hunting and celeb hookups in Los Angeles. Posh and her $250 million dollar man are moving to California with their brood at the end of the year when Becks takes up residence with the L.A. Galaxy soccer team. 11 of 16 BORN TO RUN Celebrity Babylon And bike and walk too! Jake Gyllenhaal is fast becoming the fittest man in Hollywood as he takes a brisk jog through town on Thursday. 12 of 16 CASUAL FRIDAY Ben Dome/ Pacific Coast News Holy smoke! The usually stylish Gwen Stefani does battle with London's weather with an odd assortment of finds from her closet – a T-shirt, baggy pin-striped pants and Wellies! – during a family outing on Friday. 13 of 16 HERO WORSHIP Colin Drummond/ Splash News Unlike her split personality character on the show, Heroes star Ali Larter never strays from playing nice during a visit to New York City on Friday. 14 of 16 DUNKING CHIC Kathy Willen/Ap While girlfriend Beyoncé is abroad promoting Dreamgirls, Jay-Z makes a slam-dunk appearance as the co-owner of the New Jersey Nets at a New York press conference on Thursday. The rap mogul showed off his new...um, jersey to promote the b-ball team's move in 2009 to a Brooklyn-based arena. 15 of 16 SKI BUM Carolyn Kaster/AP Lance Bass gets ready to hit the slopes Friday in Park City, Utah, where the former 'N Syncer is attending the Sundance Film Festival. 16 of 16 STRATEGIC SHOPPER Ramey Back home after filming The Tourist in Spain, Michelle Williams contemplates her next move while shopping at Barneys New York in the Big Apple on Thursday.