The Kardashian-Jenner family has a knack for outdoing itself- and Tuesday’s annual Christmas Eve bash, hosted by Kourtney Kardashian, was no exception.

The entrance of Kourtney’s home featured rows of Poinsettias and candles leading up to an upside down Christmas tree hanging from the ceiling. Four carolers dressed in top hats and traditional dresses serenaded guests as they arrived, and Kourtney even hired a man to sit in a sleigh as the party’s Elf on the Shelf.

“So homey and beautiful,” Kim said in her Instagram story on Tuesday evening as she panned over the decorations.

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Foto: A real-life Elf on the Shelf at the Kardashians' Christmas party.sourceInstagram / Kourtney Kardashian

Later in the evening, Sia performed her hit song "Chandelier" for the guests while standing in a gift-wrapped box on stage.

The 44-year-old singer traded her signature black-and-white wig for a red and green version topped off with an oversized bow, as seen in Kim's Instagram story.

After she finished singing, Sia joked that she wanted to join the Kardashian-Jenner family - and Kim quickly hatched a plan. Not only did she reveal that her brother Rob Kardashian, who typically shies away from the spotlight, was at the party, but that she wanted him to marry the singer.

"Rob!!!! He can marry Sia so she can become a Kardashian!!!" Kim wrote on her Instagram story.

Following the performance, the Skims founder posted a video of the Sunday Service Choir performing with her husband Kanye West. The rapper dropped a new album on Thursday called "Jesus Is Born," featuring the choir.

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Foto: The Sunday Service Choir performed at the party.sourceInstagram / Kim Kardashian West

Most of the Kardashian-Jenner family members gathered to celebrate Christmas Eve together and took to Instagram to show off their holiday looks.

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Youngest sibling Kylie and her 1-year-old daughter Stormi Webster matched in emerald satin dresses custom-made by Ralph & Russo.

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The Kylie Cosmetics founder paired the gown with matte green nails, pointy-toed heels, and an emerald and diamond necklace.

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Khloé also matched with her 1-year-old daughter True Thompson. She wore a gold asymmetrical dress covered in sequins, while True donned a gold sequin dress with a tutu.

E! News reported that Khloé's ex Tristan Thompson was also at the event. He appeared in a picture from the photo booth and some footage shared by a fan account.

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Kim coordinated a pink and brown color scheme for her family and wore a multi-textured gown. She also gave fans an inside look at her family, writing that North had stomach flu prior to the party, Saint was "ready to rock and was so excited to party," Chicago was "afraid of Santa," and Psalm was a "perfect angel baby."

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Kendall posted "video proof" that she was attending the party with a close-up of her make-up.

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Caitlyn Jenner wore a festive red pantsuit as she posed with Santa Claus and Sophia Hutchins.

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Kris, who traditionally hosted the party before Kim and Kourtney took over the past two years, posted a black-and-white photo from the photobooth with her mother, Mary Jo Campbell or "MJ."

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While the reality TV stars were the center of attention, friends and fellow celebrities attended the event as well.

Kourtney's ex Scott Disick and his girlfriend Sofia Richie attended the shindig.

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Celebrity hairstylist Chris Appleton and Ouai founder Jen Atkins also posted photos from the event.

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Comedian Kathy Griffin decided to live tweet her surroundings while at the party. She joked, "I am so the most popular guest at this party it is RIDICULOUS. Literally."

At the end of the night, she reassured followers that "I didn't technically get kicked out of the party. I left on my terms."