Ariana Grande
The "Way" songstress gives her grandfather a smooch in front of a giant Christmas tree.
Justin Bieber
The Biebs, his baby brother and a group of friends enjoy a "snowy Christmas" next to a giant snowman they built together.
Julianne Hough
The Safe Haven star sports a Santa hat and cuddles up with her pup in a Christmas photo she shared on Instagram.
Kevin and Dani Jonas
Aww! The Married to Jonas stars count down to baby with this adorable Christmas photo.
Chris Colfer
The Glee star wished fans a Happy Holidays suited up in an elf suit.
Taylor Swift
The Grammy winner and her brother get ready for Christmas in matching flannel Christmas pajamas.
Kim Kardashian
The Keeping Up With the Kardashians star showed off her family's massive, gorgeous Christmas tree before their annual holiday festivities began.
Josh Duhamel
The Safe Haven star sports a reindeer hat as he totes his and Fergie's son Axl on the way to the Black Eyed Pea singer's parents' house for Christmas in Hacienda Heights, Calif.
Prince William and Kate Middleton
The Duke and Duchess of Cambridge rang in their Christmas by attending Christmas Day service at Sandringham in King's Lynn, England.
Miley Cyrus
Blast from the past! The "Wrecking Ball" crooner and her family gathered together for the holidays and recreated an old family Christmas card.
Nick Cannon
Mariah Carey's hubby kicks back with their precious twins, Moroccan and Monroe, in a Santa Claus suit on Christmas day.
Taylor Swift and Hailee Steinfeld
The country crooner and her True Grit star BFF kicked off the holidays together by decorating a Christmas tree.
Rebecca Romijn and Jerry O'Connell
The couple and their two little ones pose in Christmas pajamas with their dogs in tow for their Christmas card.
Rihanna
The Bajan beauty kicked off her Christmas in red lingerie for her friend's lingerie Christmas party in her hometown of Barbados.
Khloe Kardashian and Kendall Jenner
The E! reality stars strike a fierce pose for the camera in red and white dresses at their annual Kardashian-Jenner Christmas party.
Tish Cyrus and Alan Thicke
Miley Cyrus' mom and Robin Thicke's dad hold up "naughty" and "nice" signs at the annual Kardashian-Jenner Christmas party.
Stella, Hattie, Finn and Liam McDermott
Tori Spelling showed off an adorable photo of her four little ones looking festive in front of a Christmas tree on Christmas day.
Kim Kardashian, Kylie Jenner and Kanye West
The Keeping Up With the Kardashians stars and the loquacious rapper strike a pose at the annual Kardashian-Jenner Christmas party.