Beauvoir's Second Sex seems to be acknowledged as one of the most influential books of the twentieth century. However, its relation to structuralism still has to be elaborated. The aim of this chapter is to analyze Beauvoir's reliance on Lévi‐Strauss, his elementary structures of kinship and the exchange of women (and not men). As the very asymmetry of sexual division became a target of Beauvoir's attack, she came close to asking Lévi‐Strauss the same question as Althusser, namely: Why is this (...) possible, and not something else? We conclude that the later Althusser's “repressed” aleatory materialism could account for Beauvoir's reasoning as to why the point of view of psychoanalysis and historical materialism are insufficient, and that Beauvoir's place could be identified with the repressed of the repressed. (shrink)