This article focuses on South African teenage girls' engagement with pornography. Using a decolonial approach and drawing upon new feminist materialism, this study focuses on the ways in which bodies, gender and sexuality configure to produce and constrain girls' capacities for sexual expression. The paper makes three claims. First, the article turns away from a one-sided representation of girls as only possible to know through the lens of sexual suffering while challenging childhood sexual innocence. Second, the online pornographic field is situated in a gendered and racialised system of organisation whereby the perfect body is naturalised as an esteemed object of desire. Third, the desire for the perfect, slim, blemish-free, hairless body through self-surveillance constricts capacities in line with normative standards of female beauty. A decolonial porn assemblage is harnessed to illustrate the contradictions produced as girls both desire and object to idealised bodies that are naturalised through heterosexual and racialised hierarchies. The paper concludes by considering the implications of approaching girls' engagement with pornography in relation to the expansion and limitation of their capacities and the body as an intense site of power.