Kendall Jenner slipped into a clinging brown shorts onesie for a workout in Los Angeles on Saturday.

The 28-year-old supermodel — who stars in a new Jacquemus holiday campaign — showed off her svelte physique in the snug look.

The 818 Tequila founder wore a pair of dark shades over her eyes and wore her lustrous locks loose and in a center part.

She carried a cream-colored thermal shirt while exiting a Brentwood gym after working up a sweat.

The reality television personality carried a large brown leather tote over her arm while making her way to her car.

Athleisure: Kendall Jenner slipped into a clinging brown shorts onesie for a workout in Los Angeles on Saturday

Jenner bared her arms in the sleeveless look, which also featured a structured wire bodice.

It comes after the star was active on Instagram earlier this week, posing in a clinging look from the brand Alo.

She recorded herself standing in front of a bathroom mirror, dressed in pale green-toned biker shorts, a matching bra, and a long-sleeved white shirt worn over it.

The beauty, who is dating Puerto Rican music artist Bad Bunny, clutched her phone with a dark manicured hand.

Kendall, who is the only one of her five siblings without children, recently celebrated her birthday.

She was treated to a slew of heartwarming messages online from her famous family and friends.

On her special day, November 3, big sister Kim Kardashian, 43, uploaded a carousel of photos with the runway regular.

Kardashian captioned the post, ‘Happy Birthday my beautiful Horse Girl KJ! our road trips and our travels will always be my favorite memories together and I can’t wait to create even more! 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.’

Fit: The 28-year-old supermodel showed off her svelte physique in the snug look

Social media: Her gym outing comes after the star was active on Instagram earlier this week, posing in a clinging look from the brand Alo

Celebration: Kendall, who is the only one of her five siblings without children, recently celebrated her birthday

Birthday girl: She was treated to a slew of heartwarming messages online from her famous family and friends

And the birthday girl herself later took to her online platform to share a glimpse at her festivities.

In one photo she donned an off-the-shoulder white dress with a long pleated skirt as she stood in front of a sprawling living room space.

Behind her was a banner of metallic silver balloons that read: ‘Scorpio Baby.’

Kendall wrote a cheeky caption as she simply said, ‘twenty ate.’