20-year-old Kylie Jenner is set to become the youngest self-made billionaire.
That's according to Forbes magazine, which named her one of America's richest self-made women of 2018.
She's worth about $900 million.
Jenner has her own make up line, Kylie Cosmetics.
She owns 100% of the company, which has sold more than $630 million worth of make up.
