In a cover story about the 20-year-old multi-millionaire, Forbes conservatively values the company at $800 million, with an estimated $330 million in sales last year. Jenner owns 100 per cent of it.
According to the magazine, the new mom will reach billionaire status by next year making her the youngest billionaire ever - male or female.
Kylie Jenner may be the youngest sibling of the Kardashian/Jenner clan, but she is also the family member bringing in the most cash.
By comparison her half-sister, Kim Kardashian West, 37, has to scrape by on a measly net worth of $350m.
"Social media is an unbelievable platform", Jenner told Forbes about her brand strategy.
Forbes' Natalie Robehmed detailed how Kylie Cosmetics has found success by harnessing Jenner's huge social-media following and slashing costs by outsourcing labour. "I have such easy access to my fans and my customers".
"Maybe one day [I'll] pass this on to Stormi, if she's into it", Kylie told the publication, adding that she plans on keeping the business going "forever".
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Kylie Jenner is ready to talk business in Forbes' Self-Made Women issue, available now.
"Before I even refreshed the page, everything was sold out", Jenner recalled.
Of course, it all started with her now-infamous "Kylie Lip Kits", which she reportedly trademarked when she was just 17. "I turned to makeup to help me feel more confident". "Thank you for this article and the recognition". I couldn't have dreamt this up!
In a 2017 episode of the E! reality show, "Life of Kylie", the makeup mogul spoke out about becoming a CEO in her teens.
They are only available online via her website but luckily Kylie has a UK Kylie Cosmetics website set up which converts her product prices to pounds, rather than dollars, on checkout.
As Forbes notes, Jenner's success may be fleeting; Kylie Cosmetics's revenue growth reportedly slowed a year ago.