Guided by ecological theory, the current study examined physical appearance as a moderator of the relation between familial ethnic socialization (FES) and ethnic identity among 167 Latino adolescents. Results indicated that FES was positively associated with ethnic identity exploration and resolution. Furthermore, as expected, physical appearance moderated the relation between FES and ethnic identity affirmation such that this relation was positive among adolescents who were rated as having a more Latino appearance, a less European appearance, and darker skin, and it was non-significant among adolescents with a less Latino appearance, a more European appearance, and lighter skin. Findings underscore the importance of considering within-group variation when studying ethnic identity. In addition, this study highlights the importance of examining ethnic identity as a multidimensional construct. (Contains 2 tables and 1 figure.)