Which celebrity has had the longest continuous endorsement relationship with a single brand?

Some celebrities are known almost as much for their brand affiliations as for their primary careers. These long-term brand relationships have shaped both the celebrity's image and the brand's marketing strategy. Test your knowledge of these famous brand loyalty partnerships that have stood the test of time and become part of pop culture history.

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Michael Jordan with Nike (since 1984)
William Shatner with Priceline (since 1997)
Samuel L. Jackson with Capital One (since 2013)
Betty White with Geico (since 2010)