Mariah Carey was clearly in the festive spirit — her hit song "All I Want For Christmas Is You" hit No. 1 in December 2019 after a 25-year wait — as she spent time with her family in New York City on Dec. 15. Keep reading for more stars out and about over the holidays…
Claire Danes and husband Hugh Dancy were all bundled up as they walked by a Christmas tree lot in New York City on Dec. 13.
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David Arquette wore a plaid blazer in Christmas colors outside a Los Angeles restaurant on Dec. 19.
Charlize Theron showed off some holiday style in a pair of tartan trousers as she arrived at "The View" studios in New York City to promote her latest film, "Bombshell," on Dec. 17.
Harry Styles showed off his quirky winter style as he posed with fans on the street outside the BBC Radio One studios in London after performing in the Live Lounge on Dec. 18.
"Little Women" star Saoirse Ronan bundled up in a faux fur jacket in London on Dec. 17.
Ellen DeGeneres went holiday shopping with Kris Jenner's boyfriend Corey Gamble on Rodeo Drive in Beverly Hills on Dec. 12.
David Arquette looked thrilled to be posing with Minnie Mouse and Mickey Mouse during Winterfest in Hollywood on Dec. 15.
Rich The Kid did some Christmas shopping at the Moncler store in Beverly Hills on Dec. 16.
LeBron James chatted on the phone while leaving an ugly sweater Christmas party in Los Angeles on Dec. 8.
Katy Perry rocked a Santa hoodie while taking selfies with fans in Los Angeles on Dec. 6.
Phoebe Waller-Bridge braved the winter weather to grab drinks with friends in London on Dec. 5.
Rihanna stayed warm and cozy in a black leather coat as she left the festively decorated Annabel's club in London's Mayfair area on Dec. 9.
Model Karlie Kloss was seen outside fashion designer Stella McCartney's holiday party in New York City's SoHo district on Dec. 9.
Selena Gomez looked festive in a pair of glittering gold pants by JW Anderson while out and about in London on Dec. 11.
Keri Russell looked as pretty as a Christmas present as she arrived at NBC Studios in New York City on Dec. 11 wearing a black velvet minidress featuring a big bow detail.
Jojo Siwa looked like a holiday ornament in this extra-glittery outfit she wore to dinner at Craig's in West Hollywood on Dec. 11.
Kelly Ripa and Mark Consuelos did some Christmas shopping in New York City on Dec. 9.
First lady Melania Trump spent time with patients and their families during a Christmastime visit to Children's National Hospital in Washington, D.C., on Dec. 6.
Jennie Garth baked cannolis at the Shipt and Sur La Table partnership launch at Sur La Table in New York City on Dec. 10.
Kendall Jenner did some Christmas shopping at Goyard in Beverly Hills on Dec. 10.
Emma Roberts enjoyed some holiday retail therapy in West Hollywood on Dec. 8.
Jason Biggs and wife Jenny Mollen delivered Old Navy gifts to their neighbors in New York City on Dec. 6.
Cindy Crawford posed at her Silestone Tops On Top campaign celebration at MAD Restaurant in Houston, Texas, on Dec. 9.
Duchess Kate visited an Elf workshop at Peterley Manor Farm in Buckinghamshire, England, on Dec. 4 where she took part in Christmas activities with families and children supported by the Family Action charity.
Exes Ben Affleck and Jennifer and daughters Violet and Seraphina did some Christmas tree shopping together in Los Angeles on Dec. 1 — Violet's 14th birthday.
Emilia Clarke and Emma Thompson got into the holiday spirit while attending the Covent Garden Market Christmas Lights switch-on event in London on Nov. 18.
Mario Lopez, wife Courtney and their two oldest kids, Dominic and Gia, rode in a car in the Hollywood Christmas Parade in Hollywood on Dec. 1. Mario was the parade's grand marshal this year!
Jennifer Lopez and Alex Rodriguez looked holiday glamorous as they left Lattanzi Restaurant in New York City on Dec. 3.
Justin Bieber and wife Hailey Bieber posed with fans as they shopped for a Christmas tree in West Hollywood on Dec. 1.
Anna Kendrick got some help wrangling her new Christmas tree in Los Angeles on Dec. 4.
Lea Michele looked festive while outside the "Good Morning America" studios in New York City on Dec. 5.
Selma Blair did some Christmas shopping in Beverly Hills on Dec. 3.
Dennis Quaid did some Christmas tree shopping in Los Angeles on Dec. 1.
Daniel Craig, Rami Malek, Lea Seydoux, LaShana Lynch and Cary Fukunaga braved the cold and stopped by the outdoor studio at "Good Morning America" in New York City on Dec. 3 to chat about the new trailer for the 2020 James Bond film "No Time to Die."
Model Coco Rocha daughter Ioni Conran looked to be in the holiday spirit as they left the Rockettes Christmas Spectacular at Radio City Music Hall in New York City on Nov. 25.
Jessica Alba and her beautiful family went Christmas tree shopping in Los Angeles on Dec. 1.
Lucy Boynton braved the chilly weather in a velvety coat while out running errands in New York City on Dec. 4.
"The Marvelous Mrs. Maisel" star Alex Borstein rocked a bright red coat while out doing promotional work in New York City on Dec. 3.
Busy Philipps was all bundled up in a festive coat as she braved the cold in New York City on Dec. 4.
Philadelphia 76ers player Ben Simmons rocked a festive sweater on his way to face the New York Knicks in New York City on Nov. 29.
Gwen Stefani rehearsed for her Rockefeller Center tree lighting ceremony performance at The Rink in Rockefeller Center in New York City on Nov. 14.
Jeremy Irons rocked a bold scarf at the "Pintores y Reyes del Prado" press conference at the El Prado Museum in Madrid, Spain, on Dec. 4.