OYO Rooms' 26-year-old Founder Ritesh Agarwal is the world's second-youngest self-made billionaire with $1.1 billion wealth, as per Hurun Global Rich List 2020. The 22-year-old owner of Kylie Cosmetics, America's Kylie Jenner, is the world's youngest self-made billionaire with $1.1 billion wealth, it added. Snapchat's 29-year-old Co-founder Evan Spiegel is the third youngest self-made billionaire.