Parents are crucial in the construction of their children’s attitudes towards the gender division of labor. However, little is known about the extent to which parents’ influences on their children’s attitudes weaken in favor of peers during adolescence. This study explores how gender beliefs of parents, friends, and classmates shape adolescents’ attitudes towards the gender division of labor in Sweden, Germany, England, and the Netherlands. It extends previous research which predominantly examined parent-child transmission. The analysis draws on 4645 children (at wave 1:Mage= 14.9, SDage= 0.67, females = 50%) of the Children of Immigrants Longitudinal Survey in Four European Countries. Regression analyses of within-person changes in attitudes show that adolescents on average become more egalitarian from age 15 to 16 and significantly adapt their own beliefs to those of their parents, friends, and classmates. In cases of opposing beliefs, adolescents tended to adapt more strongly to whoever held more egalitarian views, possibly aligning with more widespread norms of egalitarianism. The findings show great similarity in adaptation processes across countries and align well with a multi-layered conceptualization of gender as a social structure that shapes gender attitudes.