People use impressions of an evaluative target's self-esteem to infer their possession of socially desirable traits. But will people still use this self-esteem proxy when trait-relevant diagnostic information is available? We test this possibility in two experiments: participants learn that a target person has low or high self-esteem, and then receive diagnostic information about the target's academic success or failure and positive or negative affectivity (Study 1), or watch a video of the target's extraverted or introverted behavior (Study 2). In both experiments, participants' impressions of the target's traits accurately tracked diagnostic information, but impressions also revealed an independent self-esteem proxy effect. Evidently, the self-esteem proxy is robust and influences person perception even in the presence of vivid individuating information.