Kylie has learned a thing or two about building an empire from her sister Kim AND her mom Kris. The 21 year old just became the world's youngest billionaire, beating out Mark Zuckerburg who previously held the title at age 23.
Most of Kylie's fortune comes from her make-up line Kylie Cosmetics which brought in $360 million in sales just last year.
Kylie has been in the public eye since the age of 10 and along with her MASSIVE social media following, she was able to create a successful business back in 2015. There are only 7 full time people on her staff - she comes up with the ideas and then has the products made by Seed Beauty.