Nothing Comes Between Kourtney Kardashian and Her Calvins — See the Sexy Snap!

Kourtney Kardashian added to her collection of supersexy Instagram snaps on Friday when she shared a photo herself wearing nothing but a white bra and Calvin Klein briefs to Instagram. She captioned the photo, "TGIF," and tagged her makeup artist Mary Phillips and hairstylist Jen Atkin — either Kourtney is gearing up for a weekend photo shoot, or she's getting prepped for a Halloween party!

The reality star has posted lots of hot pictures to social media these past few months; since splitting from her boyfriend of 10 years, Scott Disick, Kourtney has been owning the single life and focusing on family, friends, and her three kids. Last weekend, she got a head start on Halloween with Penelope, Mason, and Reign, as well as her niece North West, by dressing up in superhero costumes and snapping photos of themselves at home. Check out her underwear photo above now, then find out if you're the Kourtney of your friend group.