Using a multi-informant approach, this study examined emotion regulation within the social context of White and Black adolescent peer groups by assessing two aspects of sadness expression management (i.e., inhibition, disinhibition) and their linkages to peer acceptance and social functioning as a function of gender and ethnicity. Seventh- and eighth-grade adolescents (N = 155, 52 percent female, 54.8 percent Black) completed self-reports and peer nominations of sadness management and sociometric ratings of peer acceptance. Parents rated their child's social competence and social problems. Results revealed specific patterns of sadness regulation across informants that were associated with social functioning and varied by gender, but not ethnicity. Boys were more likely than girls to minimize sadness displays; boys who violated this pattern had lower peer acceptance and higher parent-rated social problems. In contrast, although girls were rated as displaying overt sadness more frequently than boys, this was unrelated to peer acceptance. (Contains 5 tables.)