Brand differentiation is a classic marketing strategy. Achieving differentiation is a central goal of many marketing efforts. The logic for doing so often rests on finding an overlooked source of difference. The research on irrelevant attributes suggests, in contrast, that unique, distinctive, yet irrelevant differences can serve effectively as sources of differentiation. In markets where brands offer similar value and essentially offer the important, meaningful benefits, consumers can find choosing among the options challenging. Differentiating a brand with an irrelevant attribute can, ironically, simplify consumer choice and create a meaningfully distinct brand.