Which celebrity endorsement deal is considered revolutionary for transforming the traditional flat-fee model into an equity partnership, creating a billion-dollar brand?

In the world of marketing, celebrity endorsements can make or break a product's success. The right partnership can catapult a brand to new heights, while the wrong one can be disastrous. This trivia tests your knowledge about one of the most strategic celebrity endorsement decisions in recent retail history that transformed both the brand and the celebrity's business empire.

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George Clooney's deal with Nespresso
50 Cent's partnership with Vitamin Water
Beyoncé's collaboration with Pepsi
Michael Jordan's agreement with Nike's Air Jordan