Which celebrity endorsement deal was reported to have turned the spokesperson into a billionaire through equity rather than just standard endorsement fees?

In the world of pop culture, product endorsements by celebrities can make or break a brand's success. The right partnership can launch a product into cultural phenomenon status, while a mismatched or controversial endorsement might damage brand reputation. Test your knowledge about one of the most successful celebrity product endorsements in recent pop culture history that transformed both the brand and the celebrity's career trajectory.

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George Clooney with Nespresso
Rihanna with Puma
Kylie Jenner with Kylie Cosmetics
50 Cent (Curtis Jackson) with Vitamin Water