Which celebrity turned down a $10 million endorsement deal with Coca-Cola in 2013, only to sign with competitor Pepsi for $50 million the following year?

Celebrity endorsements have become a cornerstone of influencer marketing, with famous people lending their image to products across various industries. But even the most successful partnerships can have surprising backstories! Test your knowledge about these game-changing celebrity product collaborations that transformed both the brands and sometimes the celebrities' careers.

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Beyoncé
Taylor Swift
Justin Timberlake
Jennifer Lopez