Which celebrity's 2003 endorsement deal was revolutionary for including equity ownership rather than just a traditional payment, setting a new standard for celebrity product partnerships?

Celebrity product endorsements have evolved dramatically over the decades, transforming from simple advertisements to complex brand partnerships. In today's market, celebrities often become deeply involved with product development, sustainability initiatives, and brand identity. This trivia question explores a pivotal moment in celebrity endorsement history that changed how famous people interact with the brands they represent. Test your knowledge about this significant shift in product marketing!

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50 Cent with Vitamin Water (Glacéau)
Jennifer Aniston with SmartWater
George Clooney with Nespresso
Beyoncé with Pepsi