Reality TV star and make-up mogul Kylie Jenner has become the world's youngest self-made billionaire, according to Forbes billionaires' list. The 21-year-old founded and owns Kylie Cosmetics, the three-year-old beauty business that generated an estimated USD 360m in sales last year, reports bbc.com.

She reached the milestone earlier than Facebook founder Mark Zuckerberg who became a billionaire aged 23. "I didn't expect anything. I did not foresee the future. But (the recognition) feels really good. That's a nice pat on the back," Kylie told Forbes.