By Sarah
Updated March 30, 2016 12:24 AM

Kourtney Kardashian
has a seriously amazing bikini bod.

The 36-year-old posted a sexy, mirror selfie on Instagram Tuesday wearing only black lingerie – and her incredible abs (thanks to her hard work at the gym!) was on full display.

Kourtney Kardashian Snapchat

The reality star wore her hair down in the scantily clad photo as she posed in a black director’s chair in her glam room—which is also in her very enviable, huge glam closet. And Kardashian’s sister,
Kendall Jenner
has already told us that Kourtney’s wardrobe is filled with “good statement pieces.”

“The grand finale,” Kardashian, who originally shared the pic of herself on Snapchat, wrote.

Although, Kardashian just recently made a public account on Snapchat, she’s been battling with younger sister,
Kylie Jenner
for the 18-year-old’s Snapchat throne. Kardashian has even declared herself to be “the new Snapchat queen” already.

What do you think of Kourtney’s lingerie-clad selfie? Is she going to dethrone Kylie on Snapchat?

Mariah Haas