1 of 19
Not all holiday cards are created equal. Upon receiving one from Mindy Kaling, Jessica Alba gave the comedienne props and tweeted: "So of course @mindykaling ur #Xmas card is the best ever – duh."
2 of 19
3 of 19
That's the spirit! Posing in an elk-themed "jumper" (left, with a friend) and an elf sweater on the right, the One Directions singer tweeted, "Christmas jumpers are out!! Get in. @kimpopd and I are feeling festive!"
4 of 19
5 of 19
SNOOKI & JWOWW
The Jersey Shore buds sparkled in this festive shot posted on Instagram by Polizzi, who wrote, "Christmas time with my Booboo!"
6 of 19
The singer was full of holiday cheer when she posted this sweet shot on Instagram with 2-year-old daughter Violet and wrote, "Have a Happy Holiday! From Santa's Little Helpers!"
7 of 19
8 of 19
9 of 19
10 of 19
The singer kicked off the holiday season with an appearance on Late Night with Jimmy Fallon, where she and the talk-show host performed a new rendition of her hit "All I Want for Christmas Is You." Carey posted this photo afterwards, writing, "Been watching our festive shenanigans again, getting ready 4 Christmas! Thx 4 everything!! Love, Mariah."
11 of 19
That's one way to put the star on the tree! Mario Lopez's wife Courtney shared this, ahem, brief shot of her husband wearing his new line of men's underwear while decorating with daughter Gia, saying he "looks hots rocking his @RatedMOfficial with his little elf….#lovethem."
12 of 19
The expectant star changed up her social media avatar for the season, posting her glam
13 of 19
14 of 19
No night light, no problem. The reality starlet keeps her bedroom aglow with some seasonal touches. "ready for Christmas timee," she shares alongside a glimpse at her holiday-ready decor.
15 of 19
Also getting into the Christmas – dare we say Kristmas? – spirit in the Kardashian household: the youngest Kardashian, 15, who's spreading the cheer in the kitchen. "Who else loves these cookies as much as I do?" she writes of a batch of reindeer-themed baked goods.
16 of 19
17 of 19
18 of 19
19 of 19
IT'S YOUR TURN: SHARE YOUR PICS
Share your most festive photos and show us how you're decking the halls here. A pic of your dazzling Christmas tree, ribbon-tied wreath , or prettiest ornaments may appear on PEOPLE.com!
Everything We Know About Jennifer Lopez and Alex Rodriguez's Romance — So Far
Ellen Pompeo, Amy Schumer and More Female Celebs Who've Spoken Out About the Hollywood Wage Gap
Behind the Scenes of Children of a Lesser God's First Producer Meeting with Nyle DiMarco