Kylie Jenner [1] has two milestones to celebrate this week: not only can she now officially call herself a billionaire, but according to Forbes, she's now the youngest billionaire in the world [2]. The 21-year-old was featured on Forbes's yearly ranking of the richest people in the world [3], which was released on March 5, and out of the 2,153 names featured, Jenner came in at No. 2,057.

The youngest of the Kardashian-Jenner crew raised some eyebrows back in July when she covered Forbes [4] and was categorised by the magazine as a "self-made millionaire." Her financial status can be attributed, of course, to the success of her brand, Kylie Cosmetics [5], though the idea of her being self-made is still seen as debatable by many. Last year, Kylie was said to be worth $900 million — making her the richest of her siblings [6] — and the recent distribution deal she struck to have her famed lip kits sold exclusively in Ulta stores [7] nationwide is likely what tipped her into billionaire status.

"I didn't expect anything. I did not foresee the future," Kylie told Forbes. "But [the recognition] feels really good. That's a nice pat on the back." Kylie joins the list with other billionaires Jeff Bezos, Mark Zuckerberg, and Bill Gates.