The study adapted the Questionnaire of Sociocultural Attitudes Regarding Appearance (SATAQ-3) for Brazilian adolescents. We tested the factorial structure using confirmatory factorial analysis (CFA), exploratory factorial analysis (EFA), concurrent validity and internal consistency in 347 adolescents (171 males) aged 10-13 years. The AFC did not find a good fit of our sample to the models. The AFE, however, resulted in satisfactory adjustment, with factorial structure of six factors explaining slightly more than 50% of the variance. Correlations between SATAQ-3 scores and body image estimation and satisfaction indices, as well as the Body Mass Index, showed concurrent validity of the instrument. The internal consistency is adequate for the general sample and for groups stratified by sex (α Cronbach> 0.804). It has been shown that SATAQ-3 is suitable for administration to Brazilian adolescents aged 10-13 years to analyze sociocultural pressures and the internalization of appearance ideals.