Research on body image suggests that social comparison with the thin ideal has a number of negative consequences for women. To date, however, little is known on how social comparison with the thin ideal affects the accessibility of positive thoughts and feelings about the self (implicit self-liking). To examine this issue, a hundred and twenty-six young women from two countries, Canada and France, were exposed either to fourteen photographs of the thin ideal or to the same images airbrushed to make the models look slightly larger. They next completed a lexical decision task with positive self-related transitive verbs as stimuli (e.g., ‘To like myself’). As expected, women exposed to the thin ideal models took longer to correctly identify self-liking verbs compared to women who were exposed to slightly larger models. No effects were found on other positive verbs, and there were no effects of the country. The results suggest that social comparison with the thin ideal reduces implicit self-liking among young women.