Twenty-year-old Kylie Jenner's business ventures and television appearances have earned her at least US$900 million, according to Forbes.
That makes her the richest member of the Kardashian family - worth more than twice her sister Kim, who's reportedly worth around US$350 million. She's also wealthier than JK Rowling, Taylor Swift, Madonna, and Beyoncé.
- Everyone is freaking out about Kylie Jenner's hot bodyguard
- Kylie Jenner fans shocked at baby's extravagant wardrobe
If Kylie's empire continues to grow as it has for the past three years, she'll likely become "the youngest self-made billionaire" ever, says Forbes. The prestigious title is currently held by Facebook mogul Mark Zuckerberg, who made his first billion at 23 years old.
The financial magazine reports Kylie's earnings are largely made up of sales from Kylie Cosmetics, with the rest of the cash coming from television appearances and brand deals.
Famous for its Kylie Lip Kits, the makeup company has sold around US$630 million worth of cosmetics, with around half of that being made in 2017 alone.
Kylie owns 100 percent of her business, which she reportedly put up US$250,000 of her own modelling earnings to start in 2015.
The reality TV star credits much of her success to her mammoth following online - she has 110 million followers on Instagram, and over 25 million on Twitter.
"Social media is an amazing platform," she told Forbes. "I have such easy access to my fans and my customers."
Forbes defines "self-made" as simply people who haven't inherited their wealth directly. However, many would argue that being born into the Kardashian-Jenner clan played a crucial part in the young tycoon's business endeavours.
As a teen, Kylie caused controversy after admitting to getting her lips artificially augmented; but earlier this week posted a more natural-looking shot to Instagram, telling commenters she "got rid" of all her lip filler.