The global influencer marketing market size has more than tripled since 2020. In 2025, the market was estimated to reach a record of approximately 33 billion U.S. dollars. What is influencer marketing? Influencer marketing is a form of social media marketing that involves product placements and endorsements from online creators. In today’s competitive marketing landscape, brands are collaborating with influencers more firmly than ever, as partnerships with well-known creators can open the door to large potential audiences. In 2024, influencer marketing spending in the United States was forecast to reach an all-time high of 7.1 billion U.S. dollars. Seeing that internet stars can boost brand visibility, drive engagement, and impact purchasing decisions for millions of users, it comes as no surprise that spending on influencer cooperation is expected to pick up even more speed in the future. Top influencer marketing platforms Marketers can choose from an ever-expanding list of social media platforms to bridge the gap between brands and consumers. According to a recent survey, Instagram remains the most popular platform for influencer marketing in the United States, and in 2025, the global Instagram influencer market size was estimated to surpass 22 billion dollars for the first time. Apart from the photo-sharing app, video-based platforms such as TikTok have become popular among brands and marketers. In the first half of 2024, the most successful brands earned over half a billion U.S. dollars in earned media value (EMV) with their TikTok influencer marketing campaigns.