The Kardashians star also posted photos while celebrating her 28th birthday with family and friends

The Kardashians star celebrated her 28th birthday this week with family and friends.

Kendall went completely nude for the new Jacque Mus campaignCredit: Jacquemus

The model has rarely shown off her body entirely nakedCredit: Instagram/Kendall Jenner

Now Kendall has begun to prepare for the Christmas season – in a raunchy way.

The supermodel was featured in the newest ad campaign for the luxury brand Jacque Mus.

The bag designer took to their official Instagram page on Sunday to post a racy snap of the Hulu star from the back.

Kendall went completely nude for the photo shoot, showing off her entire butt crack wrapped in holiday lights.

The TV star only covered up with a lambswool belt that seemingly concealed her top half.

Jacque Mus captioned their post: “‘GUIRLANDE’ with @kendalljennerThe holiday collection. Out tomorrow!”

FAN OPINIONS

Fans were appalled by the post, some praising the model as “hot” while others slammed the campaign as “anti-Christmas.”

“Disgusting !!! What the f**k is wrong with you people!! This is no Christmas !!! Sick,” a second ranted.

“Oki love the brand but this is no class,” a third admitted.

“Did your brand really need to go down that route? Does every brand have to do that to survive in today’s world…” a fourth remarked.

“She needs to cover that,” a fifth agreed, while another wrote: “That’s what they are good at !!! Get naked and sell their body !!!”

But others were supportive of Kendall’s newest career venture, one writing: “Winter holidays have never been this HOT can’t wait!!!”

“Hot Christmas,” another agreed with a fire emoji.

BIRTHDAY GIRL

The 818 Tequila founder’s sexy snap came just days after she rang in her 28th birthday with family and friends.

The Kardashians star took to her Instagram profile on Sunday to post snaps from her birthday party, hosted at her Calabasas mansion.

In the first shot, the reality star posed in the living room of her home wearing a stunning white gown.

The dress was skintight around her tiny waist and featured Grecian-inspired sleeves that hung off the side of her shoulders.

The rest of the gown flowed outward, and Kendall swished the skirts as she turned toward the camera with a soft smile.

The photo’s background was the model’s large living room space filled with wrap-around couches and floor-to-ceiling windows.

Although it was nighttime when the picture was taken, fans could spot a resort-style pool and furniture outdoors.

Kendall wore full glam makeup and her dark brunette hair down straight around her shoulders.

Large silver balloons covered the back windows for decor, reading: “Scorpio baby.”

In a second snap, the 818 Tequila founder sat at her dining room table staring downward at a slew of birthday cakes.

The delicious treats were covered with flowers and birthday messages, two of which with tall candles lit.

Kendall closed her eyes as she waited to make a wish and blow out the flames, with her hands and fingers intertwined.

A third image showed a zoomed-out view of all the cakes including a large sheet cake with a childhood photo of the model printed on the top.

A second cake appeared to be iced by a friend, and it read: “Twenty ATEEE,” on the top.

Kendall turned 28 this weekCredit: Instagram/kendalljenner

She celebrated with family and friendsCredit: Instagram/kendalljenner

Kendall’s sister Kylie sent her flowers in honor of the big milestone