"And speaking of fake stories... The media is super shady for posting fake quotes from Caitlyn when she hasn't spoke to anyone," she wrote.
People had reported Friday that Jenner is pregnant and expecting her first child with Travis Scott in February.
The magazine later claimed Kardashian had a less-than-enthusiastic response to the news.
"Her first reaction was, 'Seriously?'" a source said. "She didn't respond well at first."
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"It's like she and Kanye [West] had gone on this whole journey to get pregnant for months, and now this happens to Kylie," the insider added of Kardashian and West reportedly expecting their third child via surrogate.
"She teared up. It definitely took a lot of time for her to process it."
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