Which celebrity's brand ambassadorship was terminated in 2009 after photos emerged of them using a competitor's product, resulting in an estimated $12 million loss?

Celebrity brand partnerships can make or break a product's success in the competitive world of pop culture marketing. Some endorsements become iconic, while others end in disaster. This poll tests your knowledge about one of the most infamous brand ambassador failures that cost a major company millions and damaged their reputation. Think you know your pop culture marketing mishaps?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Beyoncé losing her Pepsi deal after being photographed drinking Coca-Cola
David Beckham being dropped by Gillette after accidentally mentioning he used Schick razors
Katy Perry's CoverGirl contract ending when she was spotted using MAC cosmetics backstage
Rihanna's agreement with Samsung terminated after she tweeted from an iPhone