Cultural differences have been found in body image perceptions among Black and White adolescents, however little is known about the factors associated with perceptions of an ideal body size (IBS). This study examined differences in correlates of IBS among 265 Black (116 girls and 62 boys) and White (63 girls and 24 boys) adolescents. IBS for White girls and boys was related to perceptions of how their parents wanted them to look, while IBS for Black girls was related to perception of how peers look and would like to look. IBS for Black boys was significantly related to perceptions of their current size, how peers would like to look, how parents think they look, and depressive symptoms. Findings suggest cultural differences in the factors related to body image perceptions and have implications for educational programs promoting healthy body image development among Black and White adolescents. KEY WORDS: ideal body size; cultural differences; Black and White adolescents.