We expected power – the perceived capacity to influence others – to be an antecedent of positive body image because power is closely linked to self-esteem, which in turn is linked to body image. In a cross-sectional study (N = 318), sense of power was positively related to body appreciation and satisfaction with one’s appearance. Self-esteem partially mediated this effect. In an experimental study (N = 114), participants assigned to a high-power group indicated more body appreciation, reported more body satisfaction, and estimated themselves to be taller than participants assigned to a low-power group. Self-esteem mediated all the effects. Altogether, power affected body image directly but also indirectly through elevated self-esteem. Implications refer to clinical prevention and intervention programs.