Previous research investigating the relationship between body build and personality stereotypes found that the mesomorphic build was attributed positive qualities while the endomorph and ectomorph were assigned negative qualities by both males and females. More recent research has revealed a potential shift in body build preferences as standards of physical attractiveness. To examine the degree of congruence between the male and female adolescent's preference for body build of self and a significant other, 93 entering college freshmen were shown silhouettes of male and female somatotypes and asked to pick which one they would most prefer to look like and would most prefer a significant other to look like. Subjects were then asked to attribute behavioral and personality characteristics to one of the silhouettes. Chi-Square analyses were performed which revealed that males preferred to look mesomorphic and that females preferred mesomorphic looking males. Contrary to earlier research, females exhibited a strong personal preference for the ectomorphic look and males preferred ectomorphic looking females. Additional data revealed that the positive stereotype once attributed almost exclusively to the mesomorphic body-build is generalizing to the ectomorphic build for females. The data describe an emerging emphasis on thinness as a standard of attractiveness, especially for females. (Author/NB)