Kourtney Kardashian Shows Off Her Killer Bod After Scott Disick Heads to Rehab

Kourtney Kardashian has really been working on her fitness lately and on Sunday she took to Instagram to show off the latest results of all her hard work!

"Working out is one of the only things that helps when I'm feeling anxious," she captioned the photo.

In the pic the mom-of-three snaps a mirror photo mid-workout showing off her impressive body in a black sports bra, leggings and Nike sneakers.

But what we really can't get over is her insanely flat stomach!

The 36-year-old welcomed baby Reign last December -- and the "Keeping Up With The Kardashians" star has never looked hotter!

The post comes after a difficult week for the whole Kardashian/Jenner clan.

The family was in Las Vegas keeping vigil over Khloe Kardashian's estranged husband Lamar Odom, who was in a coma after being found unconscious in a Nevada brothel. He reportedly regained consciousness Friday.

Following the tragic incident, news broke that Kourt's ex Scott Disick had entered a rehab center in Malibu for drug and alcohol addiction.

Despite everything going on in her hectic world, the reality star managed to unwind with a workout and spent quality time with her kids!

"Skeleton cuddles," she captioned a photo snuggling with Mason and Penelope in Halloween pajamas.