People.com Celebrity Star Tracks: Monday, December 22, 2014 By People Staff Updated on January 21, 2022 06:01 PM Share Tweet Pin Email 01 of 31 HUG IT OUT Gustavo Caballero/Getty Aww! Jason Derulo and Meghan Trainor keep it close backstage at the Y100 Jingle Ball in Miami on Sunday. "I'm feelin' the holiday spirit!" Derulo Tweeted afterward. "Jingle ball was dope in my hometown tonight! Loved itttt!" 02 of 31 SNOWY STYLE Larry Marano/Getty Replacing her signature cat ears with a snowflake headband, Ariana Grande spreads Christmas cheer during the Y100 Jingle Ball in Miami on Sunday. 03 of 31 HAT'S OFF Alexander Tamargo/Getty Pharrell Williams proves to be pretty "rad" while performing at Sunday's Jingle Ball. 04 of 31 HEATING UP Splash News Online Yep, we're jealous. Modern Family's Sofia Vergara and beau Joe Manganiello give off that vacation glow while on holiday in Hawaii over the weekend. 05 of 31 IN THE PRESENT AKM-GSI Looks like Santa came early for Michelle Williams, who totes some gifts through Brooklyn, New York, on Sunday. 06 of 31 CITY SLICKER Splash News Online American Sniper's Bradley Cooper strolls the streets of New York City, where he is currently starring in The Elephant Man on Broadway. 07 of 31 FEELING GRAY Pacific Coast News Emma Stone stays bundled up while grabbing some grub in N.Y.C. on Sunday. 08 of 31 FAN'S BEST FRIEND FameFlynet This way! Dakota Fanning takes her pooch out for a casual Sunday stroll in L.A. 09 of 31 MODEL MANAGEMENT Craig Greenhill/Newspix/Rex USA Tyson Beckford and his girlfriend, Victoria's Secret model Shanina Shaik, walk hand-in-hand along Sydney's Bondi Beach. 10 of 31 SK8R BOY INF Fall Out Boy's Pete Wentz pauses to steady himself while attempting to rollerskate along Ocean Drive in South Beach, Miami, on Sunday. 11 of 31 HAIRY SITUATION London Entertainment/Splash News Online Sporting his new sun-kissed locks, Sean Penn squeezes in some last-minute Christmas shopping in Santa Monica, California, on Sunday. 12 of 31 THE WHITE STUFF AKM-GSI A snowboarding Bethenny Frankel hits the slopes on Sunday in Aspen, Colorado. 13 of 31 FUR THE WIN FameFlynet A well-accessorized Elle Macpherson gives us some major winter fashion inspiration on a Saturday shopping trip in Aspen, Colorado. 14 of 31 GIRL TALK Splash News Online Take a moment to imagine the conversations between Taylor Swift and bestie Lena Dunham, who make their way through New York City together on Saturday. 15 of 31 FAMILY PORTRAIT Bruce Glikas/FilmMagic Chelsea Clinton takes a break from diaper duty Saturday to catch Sting's Broadway musical The Last Ship – and meet the star himself! – with parents Hillary and Bill Clinton. 16 of 31 GOOD TIDINGS Riccardo Savi/Getty Abigail Spencer and Hilary Swank get into the spirit of the season at Saturday's Audi holiday event in Aspen, Colorado. 17 of 31 AWAY SHE GOES All Access Photo/Splash News Online Heading home for the holidays? Kesha travels in style at Los Angeles International Airport on Saturday. 18 of 31 'TIS THE SEASON Bobby Bank/Getty A festive Danny Glover spends some quality time with his little kitchen helper (grandson Adesola!) at Saturday's N.Y.C. book signing of Cooking with Ellamarie, Celebrities & Kids. 19 of 31 PUCKER UP GamePiks/Ramey New parents Mila Kunis and Ashton Kutcher engage in some serious PDA Friday night at the Staples Center in Los Angeles, where the Lakers were bested by the Oklahoma City Thunder 104-103. 20 of 31 CAUGHT IN THE ACT? AKM-GSI What's in the bag? Chris Pratt may have something exciting to put under a Christmas tree for someone special – wife Anna Faris, perhaps? – after shopping in West Hollywood on Friday. 21 of 31 WHAT A GRIN Kristina Bumphrey/StarTraks Bradley Cooper has something to smile about while sharing his new movie, American Sniper, with U.S. troops and military families during a private screening at Fort Hamilton in New York City. 22 of 31 JEAN QUEEN National Photo Group A trip to the dog groomer is a good excuse as any to show off chic yet casual attire for Mad Men star Christina Hendricks, who runs errands in Los Angeles on Friday. 23 of 31 HAVE A COW Michel Cottin/Agence Zoom/Getty She's a winner! Lindsey Vonn and her adorable new pal take a selfie on the slopes of the Audi FIS Alpine Ski World Cup Women's Downhill, where the Olympian took first place on Saturday. Winnie, the cow, was part of her prize. 24 of 31 WINTER GETAWAY Splash News Online Simon Cowell has no need for a sleigh ride this time of year. Instead, he takes local transportation – a WaveRunner – to get where he's going while on holiday in Barbados on Friday. 25 of 31 ROCK ON Theo Wargo/Getty The man of the hour shows he's pumped up and ready to take the spotlight at the AOL Build Speaker Series Presents Josh Brolin at AOL Studios in New York City on Friday. 26 of 31 CHARACTER STUDY AKM-GSI A mustachioed Ryan Gosling stays serious in a suit while on the set of his upcoming move The Nice Guys in Atlanta, Georgia, on Friday. 27 of 31 'FORE' REAL FameFlynet He's on par! Josh Duhamel practices his swing at a Bel Air, California, driving range on Thursday. 28 of 31 ROYAL REVELRY Jesal/Tanna/Splash News Online Another weekend, another wedding for Prince Harry, who gets ready to take on usher duties at the formal Friday nuptials of a close pal at Dorchester Abbey in Oxfordshire, England. 29 of 31 MAIS OUI! KCS Presse/Splash News Online A little drizzle can't dampen Jessica Chastain's smile as she leaves the Hôtel Le Bristol in Paris on Friday. 30 of 31 MOVIE MARATHON National Photo Group Toting five DVDs, Kate Bosworth makes running errands look chic on Thursday in North Hollywood. 31 of 31 PREPARING FOR BATTLE AKM-GSI The revolution is on! Action stars Theo James and Shailene Woodley put on their game faces Friday while filming Insurgent in Atlanta, Georgia.