Youngest
Billionaire
 
Screen 2 of 2
Her
new-found
title
 
is
 
because
 
of
her
Kylie Cosmetics
empire,
 
 
which
was
founded
in
2015
 
and
 
is
 
now
estimated
 
to
 
be
worth
 
a
staggering
 
$900
million.