Kylie Jenner, 20, is the youngest person on the Forbes list of America’s Richest Self-Made Women, with an estimated net worth of $900 million. Over the next year, Jenner is expected to become the youngest self-made billionaire ever. That’s a title previously held by Microsoft co-founder Bill Gates in 1987 at age 31 and by Facebook co-founder Mark Zuckerberg in 2008 at age 23.

“Wow. I can’t believe I’m posting my very own Forbes cover,” Jenner writes in an Instagram post. “Thank you for this article and the recognition. I’m so blessed to do what I love every day. I couldn’t have dreamt this up!”

Her latest boost in wealth comes primarily from Kylie Cosmetics, her makeup company, valued at nearly $800 million. Kylie Cosmetics is projected to rake in $1 billion in lifetime sales by 2022, WWD reports. Jenner says that she plans to work on the company “forever” and then pass it down to her daughter, Stormi, who’s currently five months old.

Some critics on social media have taken issue with the description of Jenner as self-made because she was born into wealth and fame. Either way, Jenner’s entrepreneurial efforts are impressive. She’s the most financially successful member of the Jenner-Kardashian family: Her older half-sister Kim Kardashian West, who just made the list for the first time, has an estimated net worth of $350 million.

Aside from Kylie Cosmetics, Jenner earns money from her paid app, the “Kylie Jenner Official App,” as well as sales of merchandise from “The Kylie Shop,” two apparel lines with sister Kendall Jenner, a book series, TV programs indulging “Keeping Up With the Kardashians” and “Life of Kylie,” and partnerships with retail brands like Puma, Topshop and Quay Australia.

Kylie launched her beauty brand on November 30, 2015, with the $29 Kylie Lip Kit, a liquid lipstick with a matching lip pencil, which sold out in just minutes. Within 18 months, the company had made $420 million in sales. Her most successful launch to date was her 2016 holiday collection release, when the company made nearly $19 million in one day. The popularity of Jenner’s products also stems from the limited number of products she makes available for each launch, which usually sell out. Seed Beauty co-founder Laura Nelson told Vanity Fair,”We are running the factory 24-7 to meet demand. It’s truly as much as we can make.”

Kylie told Complex Magazine back in 2016 that she wishes for her makeup company to get as big and successful as the other cosmetic brands like L’Oreal and Tom Ford Beauty, at present she is on her way to surpass those companies making her recognizable by Forbes list.