This exploratory study is part of a research in design and aims to understand how Portuguese higher education in textile and fashion design addresses the issue of sustainability in the preparation and training of undergraduate students. The textile and clothing industry is in a period of change with the need to restructure its business models and production processes, adding decarbonization, digitalization, circular economy, and sustainability, which consequently affects the textile and fashion designers’ activity, and it is necessary to develop new ways of working and collaboration methods taking into account these premises. The academia, in turn, must prepare textile and fashion designers to participate in this restructuring by integrating the knowledge in the elective spheres in the curricula. A non-interventional investigation was conducted, using a literature review and data collection using triangulation as the main method, with the aim of stimulating reflection and weaving new perspectives on the subject under study. It was found that the topic of sustainability is only partially addressed in Portuguese higher education in textile and fashion design and that there are key competencies in the field of society, circular economy, and sustainability that the textile and fashion designer must be prepared to respond to the challenges of the textile and clothing industry, society, and the planet.