Fashion designer Olesia Les creates based on one of the principles of sustainability - upcycling. Her interest in sustainability started 11 years ago when she was living in London. He devoted his "Fashion Engineering" master's thesis at KTU to one of the directions of sustainability. Since then, the attitude towards sustainability and its popularity in the world has changed drastically, as has its attitude towards the world of fashion and the industry as one of its branches. For more than 11 years, the designer has been looking for sustainability in fashion and sharing her discoveries.