Celebs Get in the Holiday Spirit 2017

Meghan Markle made a stunning appearance at her first royal Christmas Day celebration, attending services at the Church of St. Mary Magdalene in Sandringham, England, alongside Prince William and Kate Middleton.

The Fifth Harmony member puckered up to the Peanuts gang while visiting Knott's Merry Farm in Buena Park, California.

The Flip or Flop star gave back at the Los Angeles Mission's Christmas Celebration on Skid Row.

The "Christmas Eve" singer looked positively ethereal when she performed Wham!'s "Last Christmas" on The Tonight Show Starring Jimmy Fallon.

The tradition of caroling was alive and well on The Tonight Show Starring Jimmy Fallon, when the talented singers and actors came together for a holiday-themed version of a fan favorite segment on the late-night talk show, "Classroom Instruments."

The 22-year-old model nibbled on some tasty gingerbread treats while hosting a holiday celebration with Reebok in New York City.

The newlyweds posed for a PDA selfie during Volkswagen's Holiday Drive-In Event at Raleigh Studios in Los Angeles, where they took in a screening of Elf.

The "Swish Swish" singer donned a Santa suit to visit Seacrest Studios at Children’s Healthcare of Atlanta at Egleston. Perry visited with patients for two hours, making a point to spend time with each kid who attended the event, and performed three songs: "Roar," "Firework" and "Rudolph the Red Nose Reindeer."

Showing off her curves in a glittery white dress, Carey performed in front of a spectacular Christmas tree onstage at the O2 Arena in London, England.

The cute couple and their kids showed off some festive decorations during the Children’s Miracle Network Hospitals' annual holiday party at Duff's CakeMix in West Hollywood.

The new queen of Christmas made a sweet new pal at her You Make It Feel Like Christmas album signing at The Grove in Los Angeles. 

The Empire star was a vision in Swarvoski sparkles (that Yousef Aljasmi fringed gown!) as she hit the stage with Ciara, Sandra "Pepa" Denton, the Ying Yang Twins' D-Roc and Cheryl "Salt" James during her special, Taraji's White Hot Holidays, which airs Dec. 14. on FOX.

Joined by the New York City Gospel Choir, the Clarissa Explains It All alum took in the opening of the Duracell Holiday Window in NYC's West Village.

The late night talk show host's guest stars were clearly in the holiday spirit (That ugly Christmas sweater! Those reindeer antlers!) when they visited The Tonight Show With Jimmy Fallon.

The actresses hugged it out while hosting the 1st Annual Neon Holiday Party in New York City.

Accompanied by his This Is Us co-star, Ventimiglia showed off one of the ornaments he signed for Operation Smile. Celebs like Selma Blair, Chanel Iman and Ashlee Simpson Ross also signed ornaments, all of which will be auctioned off on eBay to benefit the non-profit. 

The 46-year-old rapper got into the holiday spirits, mixing a seasonal Tanqueray No. TEN apple cider cocktail to cheers with.

The newly engaged couple showed their love for Shepard's New York Giants from head to toe at New Era and Macy's winter kick-off at Macy's Herald Square in New York City.

During his two-day royal visit to Finland, Prince William bumped into Santa Claus walking through Helsinki's Esplanade Park, and he knew he had to hand-deliver a very special Christmas wish list from his 4-year-old son, Prince George!

The Nanny alum hosted the "Night of Light" Hanukkah event in Boston, Massachusetts, during the largest Jewish gathering in North America, the Union for Reform Judaism Biennial Convention.

The Lady Antebellum singer was joined by his son Ward, wife Cassie and brother John as he filmed the holiday episode of his INE Entertainment-produced web series, The Hook, at the Vanderbilt Children's Hospital in Nashville, Tennessee. The episode will be released on Topgolf.com on Dec. 14.

The radio host merrily slipped into a Santa suit while recording her show at the SiriusXM Studios in New York City.

Clad in punky plaid, the Suicide Squad star was "snow" excited to host a Christmas party with Burberry in London, England.

The NBA pro was one awesome Santa, making dreams come true as part of his 6th Annual Why Not? Foundation event in Oklahoma City, Oklahoma. Partnering with JMA Energy Company, 50 homeless children from the City Rescue Mission were gifted with shoes, backpacks, T-shirts and wristbands from Jordan Brand.

For the Cyndi Lauper and Friends' Home for the Holidays Benefit Concert in New York City, the girls truly wanted to have fun! Lauper and Bernhard rocked a starry Santa hat and menorah, respectively, while singing onstage.

The Madam Secretary star stepped out for Brooks Brothers' holiday celebration with St. Jude Children's Research Hospital in New York City.

The Real Housewives of New Jersey star was accompanied by her daughters at Z100's 2017 Jingle Ball's gifting lounge in New York City.

The English actress-model made a festive new friend at Love Magazine's Christmas Party at London's Georges Club.

The Grown-ish star surprised 150 kids from Children's Hospital Los Angeles and P.S. Arts at Delta Air Lines’ seventh annual "Holiday in the Hangar" celebration at LAX airport -- plus, she got to hang with Santa!

Along with Michael Strahan, the Great News star celebrated the opening of JCPenney's holiday boutique, Jacques Penné, in New York City.

It's a puppy party! The "Bedroom Floor" singer had his handsful with some very cute furry friends during Q102's Jingle Ball 2017 in Philadelphia, Pennsylvania.

With her FIJI Water in hand, Rowland got her holiday shopping on in Beverly Hills.

The "Bleeding Love" singer put on an intimate performance at a Wilhelmina Models-hosted holiday party at the Mondrian Park Avenue Hotel in New York City, where guests enjoyed specialty cocktails and holiday treats as Lewis performed Christmas classics like "O Holy Night" as well as her hits.

The Watch What Happens Live host gave a toast to the season at the UGG x SIX:02 holiday event in New York City.

The 29-year-old model indulged in the hot chocolate bar while hosting Curve Fragrances' holiday party at New York City's Arlo NoMad.

The model and fashion designer posed in front of the fun, lit-up decorations at the Stella McCartney Christmas Lights 2017 Party in London, England. 

We've got some type of love for this adorable pup that Puth played with at 102.7 KIIS FM's iHeartRadio Jingle Ball 2017 in Inglewood, California.

Has he been naughty or nice this year? Corden sat on Santa Claus' lap onstage during 102.7 KIIS FM's iHeartRadio Jingle Ball 2017.

Double the ginger fun! While backstage at Jingle Ball 2017 with Seacrest, Sheeran held up a gingerbread replica of himself.

The Christmas at Holly Lodge star was in good company at a VIP screening of her new movie, which also celebrated the Hallmark Channel's Countdown to Christmas.

Sing it, girl! Zendaya got into the spirit of the season at Bloomingdale's 2017 Holiday Windows Unveiling in New York City.

Green went crazy for the holidays while performing during the 86th Annual Hollywood Christmas Parade.

The How I Met Your Mother star's daughter Harper and son Gideon rocked some super cool jackets when they accompanied their dads to the 2017 Saks Fifth Avenue Holiday Window Unveiling and Light Show in New York City.

The Good Morning America co-host and his friends enjoyed a holiday dinner at Black Tap NYC's Lower East Side outpost, where Strahan indulged in the Wagyu beef Greg Norman burger with sweet potato fries, a La Playa Especial cocktail and a Sweet n’ Salty CrazyShake.

The Fuller House star was surrounded by a winter wonderland when she visited Hallmark's Home & Family at Universal Studios Hollywood.

The beloved boy band kicked off the holiday season in style at the Borgata Hotel Casino and Spa in Atlantic City, New Jersey.

Decked out in a metallic off-the-shoulder jumpsuit from the Rachel Zoe Collection, the fashion designer spoke with guests during her Box of Style Holiday Supper at Los Angeles' Chateau Marmont.

Weir planted a kiss on the Unbreakable Kimmy Schmidt star's cheek at Bank of America Winter Village at Bryant Park’s Annual Tree Lighting Skate-tacular in New York City.

The "Love Triangle" singer helped Georgia get ready for the holiday season by participating in Macy’s 70th Annual Great Tree Lighting in Atlanta.

The Being Mary Jane actress was all smiles at the launch of her signature Shutterfly Holiday Gift Collection at New York City's Gramercy Park Hotel.

Wahlberg was surrounded by glistening baubles at the U.K. premiere of Daddy's Home 2 in London, England.

The Hart of Dixie alum snuggled up to Santa at a California Christmas at the Grove, presented by Citi, in Los Angeles.

The 30-year-old model was sitting pretty by a Christmas tree at Domino's Holiday Pop-up Shop with Home Depot and smartwater.

St. Nick even joined Hough onstage for the holiday event at The Grove.

The Christmas in Evergreen actress and The Christmas Train star helped slid into the first-ever Museum of Christmas in New York City.

Can you blame Lachey and Hough for having smiles that wide? Not only were they surrounded by holiday lights while hosting The Wonderful World of Disney: Magical Holiday Celebration at Walt Disney World in Lake Buena Vista, Florida, they got to hang with Minnie and Mickey Mouse! The two-hour special, which was also filmed at Disneyland Resort in California, will premiere on ABC on Nov. 30.

Get the happiest start to your holidays with the cutest Yule Log on TV!

Hallmark Movies & Mysteries' A Happy Yule Log special brings some furry friends to their 24-hour TV event, which kicks off Wednesday, Nov. 22 at 5 p.m. ET/PT. Along with the holiday decor and festive music, the special features Hallmark's very own rescued and adopted pets, Happy the Dog and Happy the Cat!

A Happy Yule Log will also include surprise visits from some of the animals' cutest furry friends – like Pip Squeak, an abandoned piglet -- who want to come in from the cold and warm themselves by the fire.

"The holidays are about reaching out, spreading generosity, hope, cheer, a hot meal, and help to those who need it most. From everyone at Hallmark Movies & Mysteries, Happy the Cat and Happy the Dog, we are grateful to you! Happy Thanksgiving!"