It looks like Social Media and fashion can lead to riches in this new digital age. The youngest of the sisters is set to become the world's fastest and youngest BILLIONAIRE! Mark Zuckerberg hit it the mark at 23, Kylie is only 21! Kylie is being touted as one of the top entrepreneurs of modern times. "Kylie Cosmetics launched two years ago and has sold more than $630 million worth of makeup. Forbes values her company at $800 million. Jenner owns 100% of it" She's just getting started. Check it out.