Which brand ambassador holds the Guinness World Record for the longest-running television advertising campaign by a celebrity spokesperson?

The Guinness World Records has documented numerous remarkable achievements in marketing and product promotion. Brand ambassadors have sometimes broken world records while representing products, creating memorable promotional moments. Test your knowledge about these extraordinary marketing feats that made it into the record books!

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Stephanie Courtney as Flo for Progressive Insurance (2008-present)
Jonathan Goldsmith as 'The Most Interesting Man in the World' for Dos Equis (2006-2016)
Diane Amos as 'The Pine-Sol Lady' (1993-present)
Bill Cosby for Jell-O (1974-2003)