Kendall Jenner flashes her derrière in a red swimsuit for sexed-up Instagram selfie

Remember when a selfie included a face?

Kendall Jenner's latest mirror selfie only reveals a third of her body, but there's no mistaking that figure -- the 21-year-old showcased her enviable physique in a barely-there red swimsuit.

Although Kim is the Kardashian best known for her rear end, Kendall is definitely giving her older sister a run for her money. Take a look: 

84°

A post shared by Kendall (@kendalljenner) on

If her shape didn't leave us enviable enough, her caption made it even worse: "84°," she wrote. Maybe it's time for all of us to move to LA.

Earlier in the week, the supermodel opted for a much more conservative outfit as she filmed an upcoming Christmas special with her family. A tea-length red and black dress with low heels made for a more Santa-appropriate ensemble. 

It's unclear if Kendall was modeling the red swimsuit for an ad campaign or if she was just preparing to take a casual dip. As the face of La Perla lingerie, she often shares sensual photos from her scantily-clad shoots -- take a look in the gallery below.

20 PHOTOS
Kendall Jenner for La Perla lingerie
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Kendall Jenner for La Perla lingerie
@kendalljenner is having fun during the #SS17 adv shooting. She wore a glamorous Macramé Tale set of bralet, brazilian briefs and garter belt. Shop it now on LaPerla.com or in our boutiques
Backstage moment with @kendalljenner wearing the Macramé Tale bralet on set of the #LaPerlaSS17 advertising campaign lensed by @stevenkleinstudio
@kendalljenner stars in the #LaPerlaSS17 Beachwear campaign wearing the Summer Energy bikini with stylized starfish and colored plastic panels 📷 @stevenkleinstudio
Discover the elegant, intricate allure of the new Macramè Tale collection. A mesmerizing @kendalljenner wears the breathtaking set of bralet, brazilian briefs and garter belt. Shop it now on LaPerla.com or in our stores. #LaPerlaSS17 📷@stevenkleinstudio
Amazing @kendalljenner wearing the Leavers lace and stretch cotton Souple non-wired bra in the February issue of @thelovemagazine #LaPerlaSS17
🍒🍒🍒 @laperlalingerie
Take a look at the Geo Chic collection with @kendalljenner during the making of the #LaPerlaSS17 advertising campaign
Geometrical forms and flowers combine on the intriguing Geo Chic look worn by @kendalljenner for the #LaPerlaSS17 adv campaign. The bi-stretch silk printed jacket and the high-waisted shorts are paired with a sensual bralet. Discover the full collection online and in our stores
@kendalljenner rocks the sophisticated limited edition cocktail dress with multi-colored crystals for the #LaPerlaPreFall17 campaign. Discover the full story on LaPerla.com
@kendalljenner attended the 2017 #MetGala wearing a creation from the La Perla Haute Couture Collection designed by Creative Director @juliahaart . The all-over crystal draped gown in dégradé shades is completed with a barely-there painted macramé bodysuit. Created from 85,000 hand painted and placed crystals, it is a culmination of over 160 hours of work, spanning 5 cities and 26 craftsmen. @metcostumeinstitute #MetKawakubo
@kendalljenner is electric in our blue Floral Rhapsody halter neck swimsuit for #LaPerlaPreFall17.
Introducing La Perla's #FreedomPanty, crafted from the finest French Leavers Lace with interwoven stretch. Shop online and in our boutiques. @kendalljenner
A focus on the one-piece swimsuit with maxi-paillettes worn by @kendalljenner for the #LaPerlaPreFall17 campaign Shop the new arrivals online and in our stores
#Backstage action with #kendalljenner on the kailedoscopic set of the #LaPerlaPreFall17 campaign shot by @mertalas and @macpiggott
#kendalljenner is having fun during the #LaPerlaPreFall17 campaign shooting by #mertandmarcus . Discover more on LaPerla.com
The #LaPerlaPreFall17 campaign features #kendalljenner in a surreal Pop Art English garden wearing an intriguing lingerie set adorned with floral embroidered Leavers lace. The platform wedges with matching lace complete the look. 📷: #mertandmarcus Discover more on LaPerla.com
Discover the new Slip Dress from the #LaPerlaPreFall17 RTW collection designed by @juliahaart. This printed stretch silk piece, boasting built-in cups and embroidered detailing, is available online and in our flagship stores. Model: #kendalljenner Photography: #mertandmarcus
#kendalljenner adds her sensual allure to the #LaPerlaPreFall17 campaign wearing a one-piece swimsuit enlightened by the shimmer of translucent paillettes. 📷: #mertandmarcus
@kendalljenner looking beautiful in the Macramé Tale dress in stretch silk georgette. It has been created as a bustier in fine macramé and comes with a built-in bra. The sweetheart neckline and the seductive lace-up fastening on the back elegantly enhance the silhouette. Shop it on LaPerla.com and in our stores. #LaPerlaSS17 📷@stevenkleinstudio
Take a look at the Limited Edition Lace Universe dress worn by @kendalljenner for the #LaPerlaSS17 advertising campaign. This atelier creation with hand-made patchwork of La Perla archive Leavers laces on bi-stretch silk satin is available now on LaPerla.com and in our flagshipstores #limitededition
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