This paper examines the issue of our over-consuming society and its consequences using the example of the fashion industry. As the fashion industry alone is one of the biggest culprits in the global environmental deterioration and overexploitation of resources, the paper mainly focuses on the environmental impact. As a solution, the paper presents the application “Lessly”, which can help individual consumers to change their shopping behaviour and become more sustainable in their choices. In particular, the paper outlines the development of the app and the design decisions. The main token of the app is a mascot which also shares the name of the app, “Lessly”. The name originates from the saying “less is more” – the slogan of the app, which intends to describe the counter-movement of the ever-accelerating fashion consumption. Thus, the Lessly app represents a convenient tool for positive consumer change and the potential for a better environment and future.