As environmental changing and resource depletion problems concerns have grown in the last decade, so has interest in eco-fashion. The apparel industry generates substantial environmental and resource depletion problems throughout the textile lifecycle. To respond to these trends, fashion designers and merchandisers have been motivated to practice sustainability in design and production. They are focusing their corporate responsibility efforts in which they can have the greatest impact and create the most value: Through the material they design into their products, through the process of making those materials and products, and in the world of garment where the products are used. To help undergraduate apparel students learn problem-solving approaches to sustainable garment design, a problem-based learning project was created and implemented in an undergraduate garment ergonomics design course. The results revealed that through the process of PBL, in the course, students designed and produced original sustainable garments. Student feedback following the project as largely positive, with most students indicating they would continue using sustainable practices in future work.