Which celebrity entrepreneur became the youngest self-made billionaire (at the time) primarily through their cosmetics brand collaboration launched in 2015?

Celebrity brand collaborations have become a cornerstone of modern retail marketing, often generating massive buzz and sales. From cosmetics to fashion to food products, famous personalities leverage their influence and fan base to create successful product lines. This trivia question tests your knowledge of notable celebrity business ventures that have significantly impacted their respective industries.

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Kylie Jenner with Kylie Cosmetics
Rihanna with Fenty Beauty
Jessica Alba with The Honest Company
Lady Gaga with Haus Laboratories