Which celebrity's 2018 Instagram endorsement generated the highest documented ROI, delivering a 1,600% return on the brand's investment within 48 hours?

Celebrity endorsements have become a cornerstone of product marketing strategies, with companies paying millions to associate their brands with famous personalities. But how effective are these partnerships really? This poll explores a fascinating case study in celebrity marketing ROI that changed industry perceptions about the value of strategic endorsements in the digital age.

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

• Kylie Jenner for Fit Tea supplements
• Selena Gomez for Puma's Defy sneaker line
• Cristiano Ronaldo for Clear shampoo
• Dwayne 'The Rock' Johnson for Under Armour's Project Rock collection

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