Kylie Jenner has become the world's youngest self-made billionaire.
The 21-year-old reality star insists she "didn't expect" to be so successful when she launched her beauty business Kylie Cosmetics - which Forbes magazine values at at least $900 million - four years ago.
She told the financial publication: "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."
Most of the brand's marketing is done through social media - where the brunette beauty announces product launches, previews new items and tells fans which shades she's wearing each day - to her 175 million-plus fan base across Instagram, Facebook and Twitter and Kylie believes it's been essential to her success.
She added: "It's the power of social media. I had such a strong reach before I was able to start anything."