Simone de Beauvoir infamously stated that “[o]ne is not born, but rather becomes, a woman,” expressing, for the first time, the idea that womanhood ought to be understood as a social process rather than as a natural reality. Given the enduring inequalities induced by the internalization of femininity gendered norms, the question arises of whether it would be legitimate to attempt to disrupt, on the political level, the social process of “becoming” a woman. This paper constitutes an attempt to answer it from a liberal perspective. Starting with the concrete example of the Canadian wage gap, the first part explores the tension between the liberal commitment of respect for individual choices and gender equality promotion. Some feminists have, indeed, argued that liberalism is impotent to remedy gender inequalities as these disparities stem from choices and preferences associated with individuals’ conceptions of the “good life.” The second section of this paper then examines the policy that seems to have made the difference in countries that have achieved the greatest parity between women and men: the paternity leave quota. As for the third section, it explores the potential lines of arguments that could campaign against the establishment of such a policy within a liberal society. Dismantling these arguments one after the other, the last section seeks to demonstrate that setting up a “daddy’s quota” is not only congruent with liberal fundamental principles; it also constitutes an imperative of justice, given the current societal context.