Kylie Jenner Shows Off Her Phenomenal Figure in Tiny Black Sports Bra and Leggings: Photos

Kylie Jenner has been hitting the gym!

The 29-year-old turned heads on her Instagram Story on Tuesday, August 18, in a tiny black sports bra and leggings from the fashion and wellness brand ALO.

She flexed her toned physique and her enviable cleavage in the snug matching set for a series of car selfies that caught fans' attention.

For the first post, she sat down inside her Mercedes for a sultry selfie that put her assets on full display, simply writing "hello @alo" on the upload. Keeping her accessories minimal, the Kylie Cosmetics founder wore her black hair down and opted for a simple makeup look.

Jenner shared another selfie on her Instagram Story, this time stepping out of the car to pose by the driver's door. She angled the camera from above, cutting her head out of the shot to highlight her toned stomach and hourglass figure.

As previously reported by OK!, the beauty mogul is the face of ALO's newest collection, designed to celebrate "wellness beyond the spotlight."

For the campaign, shot against a simple white studio backdrop in Los Angeles, Calif., Jenner wore the brand's new Pink Marshmallow colorway, which dropped on Thursday, August 13.

She shared in a press release for the campaign, "Some of the most meaningful parts of my life happen when no one's watching. Those moments of stillness are what help me feel grounded and present, and I've learned to protect them."

"That's what I love about this campaign — it reminds us that taking care of yourself starts with making space for the things that are yours alone," the Keeping Up With the Kardashians star continued.

In a short campaign video shared on Instagram, Jenner added in a voiceover: "I feel most like myself in the quiet."

"Kylie has been part of the ALO community for years and we’ve always admired her distinctive sense of confidence and individuality," said ALO’s Executive VP of Marketing and Creative, Summer Nacewicz.

The stunning selfies come after Jenner recently celebrated her 29th birthday.

She threw a star-studded "princess kitty" themed bash, sharing pictures from the evening on Instagram. She wore a skintight, pink latex mini dress that showed off her famous curves for the party.

Jenner was joined by one of her best friends Hailey Bieber and her sisters Kendall Jenner, Khloé Kardashian and Kim Kardashian.

However, many of her followers noticed her longtime friend Stassie Karanikolaou wasn't in any of the pictures.

At the time, Stassie had not been spotted with Kylie in a while, as the social media star was spending her summer running around with fellow influencer Alix Earle.

While neither Kylie nor Stassie commented on the rumored fallout, the Khy founder put the rumors to rest by sharing another Story, writing, "told stas i love a hugo spritz and of course she learned how to make them."