Influencer marketing on social media has seen continuous growth over the past decade. At the same time, the fashion industry has become a significant contributor to the climate crisis, due to the rise of fast fashion. In contrast, sustainable fashion presents itself as an alternative to the cheaper fast fashion options. The aim of this paper is to examine the target group of university students living in Värmland and their impact from influencer marketing regarding sustainable fashion, and through that get implications for how companies should utilize influencer marketing to increase revenue from sustainable clothing. This in order to make society more sustainable. In this empirical research a quantitative research method is employed, and the study is conducted with an online questionnaire. The research questions are: To what extent does influencer marketing impact university students' consumption of sustainable fashion; What is the potential of influencer marketing in sustainable fashion. Three assumptions were also created: Men are less impacted; There exists a behavior-attitude gap between sustainability awareness and bad consumption of fashion; Students are receptive towards influencer marketing and therefore the same can be said about influencer marketing regarding sustainable fashion. The main results of the research is that university students in Värmland are receptive to sustainable fashion influencer marketing. The impact is smaller for males due to lower consumption of clothes and usage of social media. Findings showed that attitudes towards sustainability lead to differences in consumption of fast fashion. Attitudes matter more for men, but women also have a significant correlation between attitudes and fast fashion consumption. Nonetheless there exists an attitude-behavior gap between sustainability importance and bad consumption of clothes. Which is in line with our assumptions. The result showed that 86.8% of the respondents thought that influencer marketing can be used as a tool in making the fashion industry more sustainable. This signifies a broad consensus among consumers that they believe in it as a potential tool for making society better. It can also be argued that the university students want to see more collaborations regarding sustainable fashion due to the result of the study.