The thin ideal refers to a slim body shape that is considered to be the ideal body shape by individuals in western societies. This study was a partial replication and extension of a previous study and further examines the pervasiveness of the thin ideal in school-aged children by determining whether or not they hold the same thin ideal for male bodies as they do for female bodies. It also explores the role of media as an influencing factor in children’s development of the thin ideal. Forty-four children (aged 4–10 years old) rated the normality and attractiveness of female and male bodies from 12 different photo sets. Children’s weekly television consumption was also examined. As hypothesized, the female bodies that children rated as attractive were significantly thinner than the female bodies they rated as normal. In contrast, there was no significant difference between children’s normality and attractiveness ratings of male bodies. This provides evidence for the presence of an objective female thin ideal, and the absence of an objective male thin ideal in children. As media portrayals of female and male bodies differ, these findings suggest that – in line with the Tripartite Influence Model – media is an important contributing factor in children’s development of the thin ideal. However, contrary to predictions, children’s weekly television consumption had no influence on whether or not children held an objective thin ideal for either gender. As thin ideal internalization is a known risk factor for body dissatisfaction and eating disorder symptomatology, gaining a deeper insight into the pervasiveness and possible influencing factors of the thin ideal is crucial. Limitations of this study and suggestions for future research are also discussed.