Which celebrity endorsement caused the biggest single-day sales spike in retail history, resulting in a 1,400% increase in product purchases within 24 hours?

Celebrity endorsements have been a powerful marketing strategy for decades. From Michael Jordan's Nike partnership to Kylie Jenner's cosmetics influence, famous people can dramatically shift consumer behavior and product perception. This trivia question explores how celebrity endorsements affect retail trends and consumer psychology in our modern market.

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

Oprah Winfrey's endorsement of Amazon Kindle on her talk show (2008)
George Clooney's partnership with Nespresso coffee machines
Beyoncé's surprise album release partnership with Apple (2013)
Dwayne 'The Rock' Johnson's Under Armour athletic wear collection launch