Star Tracks: Monday, December 15, 2014
ON YOUR MARK, GET SET …
After a quarter-marathon run, tennis pro Serena Williams sweats it out at The Serena Williams Ultimate Run Karaoke After-Party and Award Ceremony in Miami Beach on Sunday.
Singer Meghan Trainor grabs the mic at Sunday's KISS 108 Jingle Ball in Boston.
BRINGING THE HEAT
THE MUSIC MEN
GREEN WITH ENVY
Nikki Reed juices up while running some errands in West Hollywood on Sunday.
It's on! Dwayne flexes his muscles for an arm wrestling match at the Children's National Medical Center on Saturday in Washington, D.C.
WHO'S THAT GIRL?
Hat? Check. Shades? Check. An incognito Jennifer Lawrence arrives at her New York City hotel on Sunday.
Costars Taron Egerton, Colin Firth and Samuel L. Jackson step out in N.Y.C. for a fan screening of their upcoming movie Kingsman: The Secret Service on Sunday.
JOY TO THE WORLD
No 'doubt' about it! Gwen Stefani gets into the holiday spirit during the 25th annual KROQ Almost Acoustic Christmas at The Forum in Inglewood, California, on Saturday.
Meanwhile, her husband Gavin Rossdale takes his Saturday performance with band Bush to new heights at KROQ's Almost Acoustic Christmas.
Lenny Kravitz takes home the NRJ Award of Honor at Saturday's NRJ Music Awards in France.
Looks like Behati Prinsloo doesn't mind holiday travel! The supermodel is all smiles while arriving at LAX on Sunday.
Why so serious, Darius Rucker? The country singer keeps a straight face next to the smiley Obama family onstage at TNT's Christmas in Washington at the National Building Museum on Sunday in Washington, D.C.
Bad Bryan! Former Breaking Bad star Cranston lays a wet one on a poster of Angela Lansbury before seeing her perform in Noel Coward's play Blithe Spirit on Sunday in L.A.
HAMM-ING IT UP
A fan snags a silly selfie with a scruffy Jon Hamm outside a restaurant in L.A. on Sunday.
GIVE HER A HAND!
ON THE GLOW
No strangers to working the camera, host Bryce Dallas Howard and director dad Ron show off their skills with a Saturday selfie session at Canon's "Let It Snow" Globe pop-up in Hollywood.
SANTA TELL HER
Ariana Grande makes for one cute reindeer as she performs at the iHeartRadio Jingle Ball 2014, hosted by Z100 New York on Friday.
DRESSED TO IMPRESS
Nick Jonas, Rita Ora and Ryan Seacrest, decked out in their festive best, get ready to take the Jingle Ball stage.
IN THE GROOVE
JINGLE ALL THE WAY
Will they take the stage to sing some tunes from Annie? Quvenzhané Wallis and Jamie Foxx hang backstage at Jingle Ball.
RING AROUND THE MARTIN
Count this as another game to add to your holiday celebrations! Martin Freeman takes a turn playing "Antler Ring Toss" while appearing on The Tonight Show on Friday.
MEALS ON WHEELS
Zac Efron grabs his lunch to go at The Palm restaurant Friday in Los Angeles.
Looking ravishing in red, Beyoncé owns the red carpet at the 2014 Billboard Women in Music luncheon at Cipriani Wall Street on Friday in New York City.
Younger star Hilary Duff stays warm (and connected) on the New York City set of her TV series on Thursday.