They spell Christmas with a "K!" 

The Kardashians swung and did not miss on their annual Christmas Eve party, full of lavish decor and famous friends.

Held at eldest sister Kourtney Kardashian Barker's home, the party was once again put on by celebrity event planner Mindy Weiss and ornately adorned with flowers by famous floral designer Jeff Leatham.

Kim Kardashian sparkled in a silver glittery dress that contrasted nicely against her newly-dyed dark hair. 

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Kim Kardashian with her dark brown hair in a sparkly dress, split Kylie Jenner in a Mugler dress that is skin toned color and black split Khloé Kardashian in a red strapless dress

Kim Kardashian, Kylie Jenner, and Khloé Kardashian showed up in their holiday attire at sister Kourtney Kardashian Barker's Christmas Eve party. (Instagram)

Family friend and Grammy-nominated singer Sia was also seen at the party, as she has been in years past. This year, she put on a special performance of her song "Snowman" alongside Kim's daughter, North.

A TikTok captured the two singing inside a life-sized present.

In photos shared to her Instagram story, Kim posed alongside two longtime friends, Jennifer Meyer and Sarah Howard.

Kim Kardashian in a silver dress does a kissy face with friend Sarah Howard in a short red frock split Jennifer Meyer in a Gucci two piece set drinks while Kim Kardashian eats

Kim Kardashian posed with two longtime girlfriends Sarah Howard and jewelry designer Jennifer Meyer. (Instagram)

Howard and Leatham gave glimpses from the inside, which included a ball pit for the children to play inside as well as a forest of red trees.

ball pit with only red balls and a Christmas elf at Kardashian Christmas Eve Party

The always-expanding Kardashian family had a ball pit for the little ones. (Instagram)

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Red Christmas trees for Kardashian party

Jeff Leatham shared his work for the Kardashian Christmas Eve party. (Instagram)

Wreaths hanging from the ceiling as people mingle at the Kardashian party with a long dining table and red velvet settees

Jeff Leatham shared the inside of the party, which included a long dining table and velvet settees. (Instagram)

In a photo posted to her Instagram, Kylie Jenner posed in a two-toned lace-detailed Mugler dress. She captioned the photo, "naughty or nice ?"

In photos shared to her Instagram story, Kylie matched alongside her daughter with rapper Travis Scott, Stormi, who is four years old.

Khloé Kardashian donned a beautiful corset red dress, but the eye-catching diamonds she was dripped in really stole the show. She also posted a story with her daughter True, whom she shares with basketball player Tristan Thompson.

Kendall Jenner also wore red, showcasing her sequined Valentino gown on her Instagram story.

Kendall Jenner in a long red sequined Valentino gown in front of a lit Christmas tree

Kendall Jenner wore Valentino to her family Christmas party. (Instagram)

Newly married Kourtney Kardashian Barker was still donning wedding white for the Christmas Eve party she hosted. Her ruched white dress with a flower on the chest was the center of a TIkTok she posted.

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In 2020, Khloé shared with her followers on Twitter that for the first time since 1978, her family was not throwing their annual party due to the coronavirus pandemic. 

The party has traditionally been hosted by matriarch Kris Jenner in the past.