What are celebrity endorsements? Celebrity endorsements involve a public figure using their知名度 to promote a product or service, aiming to leverage their influence to drive consumer interest and sales. While traditionally seen in media, the strategy has evolved significantly, with brands now seeking authentic connections that resonate with specific demographics, like True Religion’s pivot to Gen Z through strategic, street-level collaborations rather than just big names [1]. However, a celebrity endorsement isn't a guaranteed win; a multi-million-dollar budget spent on a celebrity ambassador for a baby brand, for instance, completely missed its mark because it failed to align with modern parents' purchasing behaviors [2]. Conversely, when executed strategically, celebrity endorsements can be a powerful disruptor, as shown by Clean Boss, which leveraged its celebrity founders for profitable customer acquisition and omnichannel growth against established giants [3]. These examples illustrate that successful celebrity endorsements require a deep understanding of both the target audience and the celebrity's authentic alignment with the brand message. You