Brittany’s work is grounded in a decade of independent research across consumer psychology, behavior change, and the fashion industry. Her perspective is shaped by extensive qualitative research, including interviews and ongoing conversations with brands, retailers, and industry leaders.

Brittany is the founder of the Sustainable Fashion Forum, a platform known for bringing together leaders across fashion, technology, and sustainability for nuanced, industry-shaping conversations. She has also advised brands including Rothy’s and contributed to circularity initiatives with On Running, bringing a behavior-driven lens to sustainability strategy. Her work has informed conversations across brands, platforms, and industry organizations navigating the future of sustainable fashion.

Brittany Sierra frames the broader conversation. Her work sits at the intersection of consumer behavior, sustainability, and industry strategy, focusing on the disconnect between the systems the industry has built and the rate at which consumers engage with them.