Strewn across her derriere — which was slick with water droplets — was a string of Christmas lights, as Kendall also rocked a fur-trimmed bra.

The daring photo was captioned, ‘GUIRLANDE with @kendalljenner, The holiday collection, Out tomorrow!’

Birthday girl: Kendall Jenner showed off her birthday suit for a cheeky ad just a few days after celebrating her big 28th milestone

Cheeky: The reality star/model was featured in a new promo for the holiday collection from French label Jacquemus

The eye-popping holiday advertisement comes after Kendall rang in her birthday wearing much more than just a string of Christmas decor.

Taking to her own Instagram on Saturday, the stunning brunette shared snaps of herself rocking a full-length, white gown at her private birthday bash.

She was joined by her sister Kylie and her pal Hailey Bieber for her special day and as the night went on, Hailey shared a clip of Kendall blowing out the candles on her birthday cake.

In another clip the duo posed for the camera, with Hailey writing, ‘Happy Birthday to my beautiful scorpio baby.’

Another photo showed Kendall sitting down and relaxing with an incredible backdrop of trees and mountains behind her.

It comes after her family were all quick to wish her a Happy Birthday, with her mother Kris being the first to share a sweet social media tribute.

She took to Instagram with several flashback photos of the Vogue covergirl and left a gushing note.

It read: ‘Happy birthday to my beautiful, kind, generous, giving, smart, talented, creative, amazing, and thoughtful daughter Kenny!!’ Kris then posted a birthday cake and present emoji with a kissing face.

Fully clothed: The eye-popping holiday advertisement comes after Kendall rang in her birthday wearing much more than just a string of Christmas decor

Mama love: It comes after her family were all quick to wish her a Happy Birthday , with her mother Kris being the first to share a sweet social media tribute

Sister love: Kendall’s older half-sister Kim Kardashian, 42, also marked the occasion with a tribute

Kendall’s older half-sister Kim Kardashian, 42, also marked the occasion with a tribute.

‘Happy Birthday my beautiful Horse Girl KJ!’ she wrote, acknowledging Kendall’s love of all-things equestrian.

‘You always bring the grounding energy we all need. You are such a light! I pray this year will bring you peace and more love and happiness.’

Src: dailymail.co.uk