This book examines the morality of appearance discrimination in three contexts: employment decisions; the choice of friends or romantic partners; and the everyday practice of judging and commenting upon people's looks. Andrew Mason develops a pluralist theory of what makes discrimination wrong that identifies three wrong-making features, namely, disrespect, deliberative unfairness, and contributing to unjust consequences, and demonstrates how the presence of one or more of these features in each of these contexts problematises the lookism that takes place in it.