America's Women Billionaires, Kylie Jenner Makes The Forbes List.

Just call Kylie Jenner the $900 million cosmetics queen. At 20 (although by the time the article is published she will be 21, August), she's set to be the youngest-ever self-made billionaire. Welcome to the era of extreme fame leverage.

She is on track to become the youngest 'self-made' billionaire in America thanks to her ever-growing beauty empire, according to Forbes magazine.

The Lip Kit mogul launched her cosmetics company in 2016 with $29 sets containing matching lipstick and lip liner, and has since sold more than $630 million worth of makeup.

Forbes said it valued her company at nearly $800 million and that Kylie owns 100 percent of it.

Adding millions from TV shows, endorsements and after-tax dividends from her company, Forbes said Kylie was "conservatively" worth $900 million.

Another year of growth will make her the youngest self-made billionaire ever, male or female, trumping Mark Zuckerberg, who became a billionaire at age 23. (Snapchat's Evan Spiegel also became a billionaire in his early 20s, though it's less clear when he passed that threshold.)