Kendall Jenner flaunts her flat stomach in tiny red ʙικιɴι while having fun at Labor Day party

She was joined by sisters Kim and Kourtney Kardashian on Labor Day for a BBQ.

And during the bash, Kendall Jenner flaunted her flat stomach in a barely there red ʙικιɴι.

The 22-year-old model posed alongside pals in the swimsuit for a snap, which she shared to her Instagram stories on Monday night.

The tiny crimson ʙικιɴι included high-waisted bottoms and a sports bra-style top, putting her toned midsection on full display.

The cat walker was snapped as she grinned ear to ear with her hand reaching for the camera.

Kendall, who sported deep blue nails, adding layers of gold necklaces and hoop earrings for pops of sparkle.

The cover girl pulled her brunette locks back and center parted for the bash with a makeup free face.

Kendall sat besides her friend actor and model Luka Sabbat.

She also posted a picture while posing with Bella Hadid and a pal.

Kendall and Kim  shared videos of some of the mischief and fun in the sun at their Labor Day party on their Instagram stories.

The brunette beauty showed off her red ʙικιɴι top on her and Kim’s stories; she wore a striped skirt over her bottoms.

Of course, with any great party, first comes the preparations. And Kim K gave a glimpse of the food preps to her 116million followers.

‘Kourtney made the guac you guys, Kourtney made this delicious guac,’ Kim declares in the first clip as her big sis, dressed in a stylish white ʙικιɴι top and matching skirt, put the finishing touches on her guacamole dish.

Not to be left out Kendall and one of the SimiHaze twins stood right over her shoulder admiring her work.