The present work seeks communication-based solutions for increasing sustainable fashion consumption, mainly through ecolabels. Accordingly, the author followed a mixed methods approach based on two stages: an exploratory stage, where relevant information was gathered for creating research hypotheses; and a confirmatory stage, which employed clothing label comparisons to understand the efficacy of distinct ecolabeling strategies indirectly. The results showed tremendous potential for using ecolabels as sustainability communication tools. Nonetheless, these labels only facilitated an increase in sustainable fashion consumption when presented with certain characteristics, namely being certified by an independent third-party, adopting visual labeling systems, such as the ones of the EU Energy Efficiency label, together with reinforcing consumers’ education for sustainability.