Celebs getting into the holiday spirit in 2017

Deck the halls! Trim the trees! It's the most wonderful time of the year, and Wonderwall.com is chronicling how your favorite stars are getting into the holiday spirit… starting with Gwen Stefani, whose NBC TV special, "Gwen Stefani: You Make It Feel Like Christmas," aired on Dec. 12. Keep reading to see how Taylor Swift, Ed Sheeran and more stars are getting festive for the holidays…

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Teresa Giudice posed with Santa Claus and Mrs. Claus during "Sleigh," a Toys for Tots event and meet and greet in Philadelphia on Dec. 7.

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Taylor Swift performed at 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

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Kelly Clarkson attended iHeartRadio's Jingle Ball in Toronto on Dec. 9.

Bella Hadid looked festive as she arrived at the Tag Heuer party in London on Dec. 8.

Reba McEntire hosted CMA Country Christmas at The Grand Ole Opry in Nashville on Nov. 14.

Mariah Carey brought Santa Claus on stage at her concert in New York City on Dec. 5 and took a peek into his bag!

Liam Payne attended 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

Mark Wahlberg attended the premiere of "Daddy's Home 2" in London on Nov. 16, 2017.

Ed Sheeran and Ryan Seacrest attended 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

Laura Dern visited the SiriusXM Studios in New York City on Dec. 14.

Rachel Zoe hosted a Baby2Baby holiday event at The Grove in Los Angeles on Dec. 8.

"First Christmas tree with this one 🎄 ❤️" —Sarah Hyland, who posted this photo with boyfriend Wells Adams on Instagram on Dec. 10

Andy Cohen attended the UGG x SIX:02 holiday event in New York City on Dec. 6.

Cee Lo Green performed at the 86th Annual Hollywood Christmas Parade in Los Angeles on Nov. 26.

Fifth Harmony's Lauren Jauregui attended 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

Dita Von Teese attended Ellen von Unwerth's Christmas party in Los Angeles on Dec. 11.

Sam Smith attended 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

Alex Pall and Andrew Taggart of The Chainsmokers attended 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

Ryan Seacrest visited Santa at 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

Bella Thorne and Patrick Schwarzenegger attended 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

Henry Winkler posed for photos next to a Christmas tree at the SiriusXM studios in New York City on Dec. 12.

Jenny McCarthy posed for photos in a Santa costume at the SiriusXM studios in New York City on Dec. 12.

Newly engaged couple Chanel Iman and Sterling Shepard bundled up for the Locker Room By Lids at Macy's event in New York City on Dec. 12.

Alessandra Ambrosio and photographer pal Stewart Shining attended Sam Shahid's book signing to benefit the community-based AIDS service organization ACRIA in Los Angeles on Dec. 6.

Kristin Davis attended the Gut Aiderbichl Christmas Market opening in Henndorf am Wallersee, Austria, on Nov. 14.

Yara Shahidi hosted Delta Air Lines' "Holiday In The Hangar" event at LAX Airport in Los Angeles on Dec. 6.

Tara Reid attended the 86th Annual Hollywood Christmas Parade in Los Angeles on Nov. 26.

Jane Krakowski attended the Bank of America Winter Village at Bryant Park's Annual Tree Lighting Skate-tacular in New York City on Dec. 1.

Alison Sweeney attended the "Christmas at Holly Lodge" film screening in Los Angeles on Dec. 4.

Jodie Sweetin visited Hallmark's "Home & Family" show in Universal City, California, on Nov. 21.

Mario Lopez, daughter Gia, son Dominic and wife Courtney posed with Santa at The Americana in Glendale, California, on Nov. 16.

James Corden spent time with Santa at 102.7 KIIS FM's Jingle Ball 2017 in Inglewood, California, on Dec. 1.

"Spent my day making Thanksgiving dinner(rehearsal to see which pants I need to wear on the day), and now I'm on to Christmas. #winningthewknd #tummyachetea" —January Jones, who posted this photo on Instagram on Nov. 5

Designer Zac Posen posed with Santa as Brooks Brothers celebrated the holidays with St. Jude Children's Research Hospital in New York City on Dec. 12.

Julie Bowen and Rachel Zoe attended Tiny Prints Presents The Baby2Baby Holiday Wrapping Party in Los Angeles on Nov. 29.

Elsa Hosk attended the Prabal Gurung & Mastercard event celebrating the Love Is Love Collection in New York City on Dec. 14.

Nick Lachey attended his annual St. Nick's Day holiday event benefiting 10 Boys & Girls Clubs from his hometown of Cincinnati on Dec. 7.

Jessica Lowndes visited Hallmark's "Home & Family" show at Universal Studios Hollywood in Universal City, California, on Dec. 1.

Cyndi Lauper and Sandra Bernhard performed at the Cyndi Lauper and Friends Home for the Holidays benefit concert in New York City on Dec. 9.