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Kendall Jenner, Khloe Kardashian, Instagram


It's only natural that the first thing anyone does after being reunited with a sibling is lick their stomach, right? 

No? Well, judging from Khloe Kardashian's recent Instagram post of a pretty bizarre embrace between her and little sis Kendall Jenner, that's exactly how the famous duo greets each other. 

After closing Chanel's Paris Haute Couture Fashion Week show in a bold bridal pantsuit, the 19-year-old supermodel flew back to Los Angeles for a sweaty workout sesh with her fellow E! star that seemed to take a turn for the freaky. 

Calvin Klein

Calvin Klein/Mikael Jansson

"I missed her so much and those abs were irresistible!!!! #SisterSister," Kardashian captioned the pic

Both stars look fit and fabulous in matching black ensembles and brightly colored neon kicks as Kendall covers her mouth (From shock? From laughter? From disgust? It could be anything) when 31-year-old KoKo wraps her arm around her sister's waist and gets a taste of Kenny's rock-hard abs.

And it's her super-tight midsection that has also landed Jenner an opportunity to strut her stuff for Calvin Klein's "The Original Sexy" campaign. In the racy photos, the It girl strips down to nothing but a lace bra and panty set. Hot damn!

Maybe we can't blame Khloé after all.