Kourtney Kardashian flaunts toned tummy wearing sports bra for boxing Larsa Pippen

Kourtney Kardashian flaunts toned tummy wearing sports bra for boxing Larsa Pippen

She's never afraid to show off her hard-earned body.

And Kourtney Kardashian made sure to show off the fruits of her labor after a late-night boxing workout at Cru Boxing in West Hollywood on Monday with her pal pal Lars Pippen.

The 39-year-old social media starlet rocked a black sports bra and matching leggings as she struck a pose for an Instagram snap with her lady friend.

Kourtney's toned and tanned abs took center stage as she rocked a tiny black sports bra paired with matching, high-waisted leggings.

A huge pair of boxing clubs were strapped to her hands and she tied back her brown hair into a high ponytail.

Best friend Larsa Pippen appeared to enjoy the grueling workout as she struck a pose with Kourtney.

The darling duo posed earlier together on Instagram for a few mirrored selfies before taking the gym to sweat it out.

Kourtney's put quite the emphasis on fitness the last few months, routinely sharing photos of her fit figure on social media.

She recently showed off her chiseled physique in her bathroom mirror, going topless except for a scarlet bralette from Christian Dior's J'adior collection.

The mother-of-three also recently embarked on a new business venture with her sister Kylie Jenner.

Newly launched, the chic makeup line is called KOURT X KYLIE, and consists of three eyeshadows and three lipkits.

In a series of '80s-inspired photos, the sisters rocked strappy white bikinis as posed alongside a beige backdrop.

We have been working on this for a year ... 3 mini eyeshadow palettes and 3 lips..I am wearing Matcha on my eyes and RAD on my lips. Happy Birthday to me, 'Kourtney captioned a photo.

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