Discussions on sustainability in the fashion industry highlight the need for a holistic and strategic approach. This study investigated consumers`` perception of fashion companies`` sustainability and its relationship with value and perceived consumer effectiveness as well as with consumer trust, preference, and purchase intention. The assessment scale of fashion companies`` sustainability was developed for this study and data were obtained from 645 consumers in their 20``s to 60``s in Korea. As a result, consumers`` value and perceived consumer effectiveness had significant effects on consumers`` perception of fashion companies`` sustainability. Universalism, security/benevolence and perceived consumer effectiveness were variables that had significant effects on all four dimensions of sustainability. Consumer``s perception of fashion companies`` sustainability significantly influenced consumer trust, preference and purchase intention. Especially, environmental, societal, and cultural sustainability (rather than economic dimension) were shown to have a greater impact on consumers`` trust, preference and purchase intention.