Sarah Michelle Gellar
"We got to see the big guy' today (well except for #FPJ who was home sick) at #ssw15 but don't worry #FPJ we passed along your message to #Santa," the actress wrote on Instagram. "Thank you @thebillhorn and @scoutmasterson."
Reese Witherspoon
"I'm live with the man himself!! Any requests… ?" the actress wrote on Instagram while visiting the National Christmas Tree. "#DearSanta #NCTL2015 (dress by @draperjamesgirl)"
Scott Eastwood
The hunky actor gets in the holiday spirit behind the bar while attending a fundraiser for the Charlotte and Gwenyth Gray Foundation at Rock & Reilly's Irish Pub.
Jamie-Lynn Sigler
It's family night for the actress as she takes her partner and son to the Staples Center for Disney On Ice Presents Frozen.
Howie Mandel
"The malls are getting so busy there's no place to sit #HolidaySeasonIsHere," the America's Got Talent judge joked on social media.
Mark McGrath
The lead singer of Sugar Ray performs at the 84th Annual Hollywood Christmas Parade benefiting the 84th Annual Hollywood Christmas Parade.
Kylie Jenner
Christmas dinner starts early as the Keeping Up the Kardashians star hosts a meal for her closest friends.
Alessandra Ambrosio
The supermodel hosts a holiday themed viewing party for the annual Victoria Secret Fashion Show at LA hotspot Bar 53 on the Sunset Strip.
Olivia Palermo
The fashionista gets in some holiday shopping at the new Jo Malone London boutique at The Shops at Columbus Circle in NYC.
Meghan Trainor
Now that's a Christmas sweater! The "Lips Are Movin'" singer works quite the ensemble at 102.7 KIISFM's Jingle Ball.
Ace Young & Diana DeGarmo
The American Idol alumni sing carols at the 84th Annual Hollywood Christmas Parade.
Giuliana & Bill Rancic
The Fashion Police co-host (in an Ugly Christmas Sweater from Kohl's) and her husband start Christmas shopping with their son Duke at Kohl's Holiday Storybooth Pop-Up held in New York City.
Tori Spelling & Family
The actress appears with husband Dean McDermott and children Finn, Liam, Hattie, Jack and Stella at the 2015 Santa's Secret Workshop event. The family picked out customized Build a Bears and Ju-Ju-Be diaper bags.
DNCE
Joe Jonas and his band members enjoy a holiday Party hosted by URLO Wine at the Continental Club in Downtown Los Angeles.
Tinashe
The "All Hands on Deck" singer picks up the ultimate holiday accessory from MyCapSanta at 102.7 KIISFM's Jingle Ball.
Bethenny Frankel
"Best time of the year. Greatest city in the world," the Real Housewives of New York City star wrote on Instagram from Rockefeller Center
Kate Walsh
The actress signs Balsam Hill ornaments for an auction benefiting Operation Smile.
Tom Schwartz
I'm going into full holiday mode starting today with my @skyyvodka swag," the Vanderpump Rules star shared on social media. "Christmas music will now be streamed 24/7."
Molly Sims
"Love me some Santa #stillbelievingmomma," the supermodel captioned online.
Michelle Obama
Not a creature was stirring, not even Rizzo the Rat. At the National Tree Lighting ceremony in Washington, D.C., the first lady and Miss Piggy read 'Twas the Night Before Christmas to children.
Haylie Duff & Family
The acttress appears with husband Matt Rosenberg and their daughter, Ryan at the 2015 Santa's Secret Workshop event benefiting LA Family Housing.
Reese Witherspoon
"So excited to do #TheNationalTree lighting in DC," the A-list actress shared on Instagram. "Practicing... How am I doing? #LOL #CantWait #NCTL2015 #HappyHolidays."
Christie Brinkley
The supermodel and Smile Train Goodwill Ambassador lights up the Empire State Building on Giving Tuesday.
Alfonso Ribeiro & Family
The actor appears with his wife, Angela Unkrich, and their sons Alfonso Ribeiro Jr. and Anders Reyn at the 2015 Santa's Secret Workshop event.