According to the outlet, Jenner has amassed $900 million dollars since launching the brand less than three years ago, which makes her the youngest person on the fourth annual ranking of America's Richest Self-Made Women.
And let's not sleep on this, her momager Kris Jenner no doubt is set for a hefty chunk of the change.
In 2016, Kylie Cosmetics debuted with a $29 "lip kit" (for the uninitiated, it's a matching lipstick and liner duo), and, according to Forbes, she has sold more than $630 million worth of makeup since - including an estimated $330 million in 2017 alone. Kylie - who owns 100% of the company, now worth almost $800 billion - credits social media for helping her build such a massive following of customers.
Of course, it all started with her now-infamous "Kylie Lip Kits", which she reportedly trademarked when she was just 17.
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Last month, ET caught up with Kim at the launch of her KKW Beauty and Fragrance pop-up shop in Los Angeles, where she revealed how her and husband Kanye West's eldest daughter, 5-year-old North, is already making her own beauty decisions.
Her sister Kim Kardashian, who propelled the family to fame with her sex tape with Ray-J before the whole family went on to score a reality TV show, congratulated Kylie with fire emojis earlier today and sharing the front cover. "It could easily be an instant game-changing acquisition for any company on the hunt for a winning brand with a younger customer", senior VP or merchandising at Ulta Tara Simon said. Another year of growth will make her the youngest self-made billionaire ever.
"I struggled for a minute with finding something to do on my own", Jenner said, before adding, "ever since I was in sixth grade, I would wear purple eye shadow". Using its standard formulation, Forbes values the company at $800 million, and Kylie is the sole owner.
"Before I even refreshed the page, everything was sold out", Jenner said. I do feel like people don't take me seriously as a businesswoman because of my age and my reputation. It called her business' overhead costs "minuscule".