Taylor Swift and kittens: that was the secret recipe for Diet Coke’s commercials featuring the pop star, whose partnership with the brand began in 2013. Billboard called the ads "the cutest Diet Coke commercial you're ever going to see," and the campaign coincided with Swift transforming from country music darling to full-fledged pop princess.

Diet Coke (also branded as Coca-Cola Light, Coca-Cola Diet or Coca-Cola Light Taste) is a sugar-free and low-calorie soft drink produced and distributed by the Coca-Cola Company. It contains artificial sweeteners instead of sugar. Unveiled on July 8, 1982, and introduced in the United States on August 9, 1982, it was the first new brand since 1886 to use the Coca-Cola trademark. The product quickly overtook the company's existing diet cola, Tab (which was discontinued in 2022), in sales.