Celebrity endorsements have been around for as long as the concept of celebrity has existed. Consider PepsiCo’s newest brand of sparkling water, Bubly. In 2019, the company contracted with Michael Bublé for a series of advertisements where he plays with the Bubly/Bublé relationship, insisting that the water’s name is pronounced “boo-blay,” like his last name. The Bublé/Bubly partnership applies a number of essential items for a successful celebrity endorsement.