Kylie Jenner.

Kylie Jenner is the Founder of Kylie Cosmetics, the beauty brand she launched in 2015 at age 18 that became one of the fastest-growing cosmetics companies in history, and Khy, her fashion brand launched in 2023.

Jenner bootstrapped Kylie Cosmetics from her existing Kylie Lip Kits, selling out initial inventory in seconds thanks to her massive social media following. The brand grew explosively, and in 2019, Jenner sold a 51% stake to Coty for $600 million, making her one of the youngest self-made billionaires in history (a title later disputed). Kylie Cosmetics has expanded into skincare (Kylie Skin), haircare, and baby products (Kylie Baby). In 2023, Jenner launched Khy, a fashion brand that takes a fresh approach compared to her earlier ventures. Her businesses operate at the intersection of celebrity, social media influence, and direct-to-consumer commerce, representing one of the clearest examples of how social media audiences can be converted into consumer businesses. While celebrity-founded brands have a mixed track record, Jenner's sustained commercial success across cosmetics, skincare, and fashion demonstrates genuine entrepreneurial capability beyond fame alone.