When social scientists argue that “families” reproduce and sometimes challenge gender and sexual norms, they tend to refer to biological, cisgender, and heterosexual families. We consider how one alternative family form—stepfamilies—might, like gay and lesbian families, challenge these norms. Interviews with 20 biological and stepparents reveal that whereas biological parents held relatively intense feelings about their children’s gender and sexual conformity, stepparents were indifferent and far less inclined to police their children’s behavior. We conclude that stepfamilies, similar to gay and lesbian families, might be a source of less rigid expectations and greater liberty than biological families, and we consider the implications for the future of traditional gender and sexual norms in the face of the proliferation of alternative family forms.