In the contemporary era of the mobile Internet, communication has undergone a paradigm shift. No longer confined to those with specialized skills or access to traditional media, ordinary individuals now have the opportunity to express themselves, showcase their talents, and share their preferences with a global audience. This transformation has ushered in a new era where virtually anyone can stake their claim to fame, cultivate a dedicated following, and disseminate their personal preferences and opinions. The democratization of communication has brought about a fundamental change in the dynamics of celebrity endorsement within the fan economy. Traditionally, celebrities were individuals with widespread recognition, often from the worlds of entertainment, sports, or other high-profile domains. They were sought after by brands to lend their influence and credibility to products and services. However, with the rise of social media platforms and digital content creation, ordinary individuals can amass substantial followings, effectively turning them into micro-celebrities. This shift challenges the traditional celebrity endorsement model, as micro-celebrities and influencers now wield significant influence over niche audiences. Brands are increasingly recognizing the potential of partnering with these micro-celebrities who have cultivated authentic and engaged fan bases. In light of these developments, this research aims to explore the evolving landscape of celebrity endorsement in the fan economy. It will investigate how micro-celebrities and influencers are reshaping the marketing strategies of brands and the ways in which they engage with their audiences.