This article focuses on the experiences of becoming and being mothers for lesbian co-parents who have children via donor insemination. Rather than the presence of children incorporating lesbians into the mainstream as “honorary heterosexuals,” the author argues that lesbian parenting represents a radical and radicalizing challenge to heterosexual norms that govern parenting roles and identities. It undermines traditional notions of the family and the heterosexual monopoly of reproduction. The same-sex context together with successful collaboration with donors supports the refashioning of (...) kinship relationships. An attentiveness to the gender dynamics of sexuality illuminates further contestations. The author argues that their structural similarities as women place them in contradiction with dominant gender practices enacted in heterosexual relationships. This facilitates the evaluation and negotiation of more egalitarian approaches to work and parenting, and through their operationalization, much of the logic supporting conventional divisions of labor is undermined. (shrink)