The brother-and-sister pair fell out earlier this year when it emerged that Kardashian, 28, had started dating Blac Chyna, who used to go out with (and also has a child with) Jenner's current squeeze, Tyga.
But although an insider previously told Us that Jenner and Kardashian were struggling to get past his new relationship ("Kylie says Rob stabbed her in the back," the source said), these Snapchats suggest they've managed to overcome their issues.
In the photograph, Kardashian and Jenner pose closely together, both dressed in dark workout clothes, in what appears to be an office, with a whiteboard behind them.
In the video, shot by pal Nicky Diamond, Kardashian is seen bending down to peer into Jenner's car. The 18-year-old reality star is, as usual, busy on her phone but looks up to smile at the camera while Kardashian gives a cool grin.
As fans freaked out about the fact that the duo were back on speaking terms, Jenner took to Twitter to insist that it was no big deal.
"I see him all the time chill," she tweeted.
Kardashian is back in Los Angeles after a weekend jaunt to Jamaica with Chyna. The Arthur George sock designer had a blast and shared several very happy selfies from the dream Caribbean destination.
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