Issues related to young women, power and sex are central to feminism and remain a central source of debate. This centrality underscores the need to question what power and sex mean to young women. Research that weaves together lessons from feminism and from young women's own lived experiences can advance our understanding of young women, power and sex. This article describes how a sample of young women define, understand and conceptualize their power within their heterosexual relationships. The young women's words provide insight into how current feminist understandings of girl power may need to be reconsidered and adapted to explain young women's changing realities.