Which celebrity's makeup brand reached a valuation of $1 billion fastest, earning the title of 'fastest-growing beauty brand' when it hit the milestone in 2018?

Celebrity brand endorsements are common, but sometimes stars take it a step further and create their own product lines or companies. This trivia tests your knowledge about famous people who've made significant moves in the business world, transforming their personal brand into successful product empires. How well do you know these celebrity entrepreneurs and their ventures?

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Kylie Jenner's Kylie Cosmetics
Rihanna's Fenty Beauty
Lady Gaga's Haus Laboratories
Jessica Alba's Honest Beauty