Doublemint is a flavor of chewing gum made by the Wrigley Company. It was launched in the United States in 1914, and has had variable market share since that time. One of the most notable aspects of this brand is the advertising campaign, begun in 1956, which utilized twins as spokespersons for the gum, as a play on the word 'double' in the name. The original 'Doublemint Twins' were Jayne and Joan Boyd of Hammond, Indiana, who appeared in advertisements for Doublemint until Joan became pregnant in 1963.
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