Recently, environmental sustainability became a crucial matter in order to maintain life and natural resources. Slow fashion, which is the antithesis of fast fashion, is a sustainable fashion movement in which slowing down the consumption is aimed. In this context, education is an essential tool for achieving sustainability. This study aimed to analyze university students' knowledge and attitude towards clothes in terms of environmental sustainability and slow fashion. In accordance with the aim of the research, a questionnaire form consisting of 17 questions was prepared. The research was conducted in Ege University, with the students of various academic programmes (associate, bachelor, master, PhD.). According to the results of our research, approximately 80% of the university students didn't have enough knowledge and awareness about slow fashion. Also, approximately half of them are not informed about environmental sustainability. It was also obtained that, attended academic programme has an effect on the environmental awareness of the university students.