Star Tracks: Monday, December 22, 2014

01 of 31

HUG IT OUT

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

SNOWY STYLE
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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

HAT'S OFF
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Pharrell Williams proves to be pretty "rad" while performing at Sunday's Jingle Ball.

04 of 31

HEATING UP

HEATING UP
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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

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

CITY SLICKER
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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

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

FAN'S BEST FRIEND
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This way! Dakota Fanning takes her pooch out for a casual Sunday stroll in L.A.

09 of 31

MODEL MANAGEMENT

MODEL MANAGEMENT
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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

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

HAIRY SITUATION
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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

THE WHITE STUFF
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A snowboarding Bethenny Frankel hits the slopes on Sunday in Aspen, Colorado.

13 of 31

FUR THE WIN

FUR THE WIN
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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

GIRL TALK
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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

FAMILY PORTRAIT
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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

GOOD TIDINGS
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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

AWAY SHE GOES
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Heading home for the holidays? Kesha travels in style at Los Angeles International Airport on Saturday.

18 of 31

'TIS THE SEASON

'TIS THE SEASON
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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

PUCKER UP
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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?

CAUGHT IN THE ACT?
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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

WHAT A GRIN
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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

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

HAVE A COW
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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

WINTER GETAWAY
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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

ROCK ON
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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

CHARACTER STUDY
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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

'FORE' REAL
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He's on par! Josh Duhamel practices his swing at a Bel Air, California, driving range on Thursday.

28 of 31

ROYAL REVELRY

ROYAL REVELRY
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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!

MAIS OUI!
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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

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

PREPARING FOR BATTLE
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The revolution is on! Action stars Theo James and Shailene Woodley put on their game faces Friday while filming Insurgent in Atlanta, Georgia.

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