People.com Celebrity Star Tracks: Monday, December 13, 2010 By People Staff Published on December 13, 2010 05:00 PM Share Tweet Pin Email 01 of 20 GOOD CHEER Suzi Altman/Zuma They're Team Taylor, for sure! The New Orleans Saints cheerleaders show the Twilight star their holiday spirit at the Super Dome, where the home team beat the St. Louis Rams, 31-13, on Sunday. 02 of 20 MIAMI HEAT Bauer-Griffin They're PDA compatible! Cameron Diaz keeps her eyes on the prize – her favorite Yankee Alex Rodriguez – as the pair take a stroll Friday in Miami. The following day, the cozy couple attended the wedding of actress Joanna Garcia and fellow Yankee star Nick Swisher. 03 of 20 RAISING CAPITOL Theo Wargo/Wireimage Ellen DeGeneres goes in for a sweet tummy pat at another festive holiday performance featuring Mariah Carey – and her burgeoning baby bump! – at TNT's Christmas in Washington 2010 concert on Sunday. 04 of 20 LONDON FOG Stealth/Splash News Online Christina Aguilera and new beau Matt Rutler continue their whirlwind romance across the pond, partying at U.K. nightclub Mahiki into early Sunday morning. 05 of 20 LIFE'S A BEACH GSI Motherhood does keep Halle Berry ! The Frankie and Alice star plunks down in the Malibu sand to build castles with daughter Nahla, nearly 3, on Sunday. 06 of 20 HEAD & SHOULDERS Todd Williamson/WireImage Selena Gomez finds a good shoulder to lean on in Monte Carlo costar Cory Monteith at Sunday's Hollywood Style Awards with The Palazzo Las Vegas in L.A. 07 of 20 SCI-FI FLY Todd Williamson/WireImage Olivia Wilde and costar Garrett Hedlund are a golden couple at the Los Angeles premiere of their film TRON: Legacy on Saturday. The sequel to the 1982 cult hit, also starring Jeff Bridges, opens Dec. 17. 08 of 20 GRIN & BEAR IT Sara De Boer/Startraks Now that's a cozy threesome! Justin Timberlake gets animated with Yogi Bear and Boo Boo (to whom the singer lent his voice) at the Westwood, Calif., premiere of Yogi Bear 3D on Saturday. 09 of 20 Two-Go GSI Media After a family lunch at Kiwami, Gwen Stefani escorts son Kingston, who, like dad Gavin Rossdale (not pictured) walked out with a toothpick in his mouth! 10 of 20 Reindeer Games Charley Gallay/WireImage Pete Wentz, son Bronx and wife Ashlee get in the holiday spirit, posing for a family portrait at the Old Navy Awkward Holiday Photo Mobile on the 3rd Street Promenade in L.A. to benefit St. Jude. Ho ho ho! 11 of 20 ENGAGING Copyright 2010 Mario Testino Prince William and Kate Middleton shared not one, but two official portraits by Mario Testino with the world – check out the formal one here! 12 of 20 MARCHING ON Kevin Mazur/WireImage Katy Perry gets in the holiday spirit, performing at the Z100 Jingle Ball in her take on a toy soldier Friday night in N.Y.C. The show airs on Fuse Thursday, Dec. 16, at 9 p.m. 13 of 20 PUCKER UP Kevin Mazur/WireImage Kim Kardashian and Justin Bieber cozy up backstage at Z100's Jingle Ball 2010 at Madison Square Garden Friday night in New York City. 14 of 20 GALA GIRL Jeff Kravitz/FilmMagic A radiant Jennifer Hudson glows in a figure-flattering Dolce amp Gabbana gown before performing at the Ambassadors for Humanity Gala, benefitting the USC Shoah Foundation Institute, Thursday in Los Angeles. 15 of 20 BEE LIST Kadena Pix/Bauer-Griffin Lady Gaga sports a leather-and-lace covered beehive on Friday while driving away from Barcelona's El Prat Airport. The singer has performances in Spain over the weekend, then moves on to London and Paris next week. 16 of 20 IN THE HOOD JAckson Lee/Splash News Online Selena Gomez goes the casual route Friday, touching down at JFK Airport a hoodie and dark denim while en route to her performance at Z100's Jingle Ball in New York City. 17 of 20 A GRAND GESTURE Splash News Online He knows how to make a point! Jim Carrey articulates his feelings Friday while filming Mr. Popper's Penguins in New York City's Central Park. 18 of 20 SWEET DEAL Spash News Online Touring Australia is a piece of cake for Oprah Winfrey, who makes a surprise visit to an Australian family – and scores some sweets! – as she continues her Down Under adventure in Toorak on Friday. 19 of 20 CHAIN REACTION X17 While wife Victoria spends time across the pond, a dressed-down David Beckham takes care of important holiday shopping solo at the Beverly Hills Ralph Lauren boutique on Friday. 20 of 20 BIRDS OF A FEATHER Fame Bulgari Man Clive Owen links up with Julianne Moore – another Bulgari spokesmodel – Thursday at the Italian luxury retailer’s 125th anniversary celebration at the Grand Palais in Paris.