Kourtney Kardashian Kicks Back, Flaunts Bod In White Lingerie (Photo)

Nothing comes between Kourtney Kardashian and her Calvins!

The reality star showed off her trim figure in a casually sexy Instagram snap on Friday, posing in just white, high-waisted Calvin Klein briefs and a matching bra. 

TGIF.

A photo posted by Kourtney Kardashian (@kourtneykardash) on Oct 30, 2015 at 2:48pm PDT

She has personal ties to the iconic brand – her sister, Kendall Jenner, is a spokesmodel for its lingerie line. 

"TGIF," Kourtney captioned her photo, kicking back in a makeup chair with a relaxed smile.

The mom of three looks refreshed and happy after what's surely been a hectic few months. 

In July, she split from longtime love Scott Disick after nearly a decade together, and her sister Khloe's estranged husband Lamar Odom has been hospitalized since Oct. 13.

Earlier this month, the 36-year-old told fans that she was using exercise as a way to calm her nerves.

"Working out is one of the only things that helps when I'm feeling anxious," Kourtney wrote, posting an Instagram shot of herself decked out in sleek fitness wear.

Family time can be a good stress reliever, too. 

On Oct. 24, Kourtney shared pics of early Halloween festivities with her kids Mason, 5, Penelope, 3, and Reign, 10 months, showing off the foursome dressed as an adorable superhero squad

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