Reflecting the phenomenon of the growing importance of sustainable consumption in achieving sustainable development, this study argues that luxury fashion brands can promote consumers to make sustainable consumption, by encouraging consumers to choose timeless style over seasonable fashion and long-lasting quality over excessive quantity, and thereby buy less and wear the product for long, having a socially and environmentally friendly influence to the planet. In addition to the leading role that luxury fashion brands play in consumers’ sustainable consumption, this study draws on the Coping Theory to explain how consumer guilt plays an important role in promoting consumers’ sustainable behavior (i.e., sustainable divestment intention). To achieve the aim of this study, we will collect 400 valid responses from consumer panelists of a commercial online survey company. Further, this study will analyze the data by adopting structural equation modeling (SEM) via AMOS 22.