Body-related envy (when an individual desires to possess, or wishes another individual lacked, a body appearance and/or fitness characteristic) may be an important self-conscious emotion contributing to sport and exercise participation and experiences. However, there is a lack of validated instruments to assess body-related envy. The purpose of the present studies was to test the body-related envy scale (i.e., BREV) in adolescent girl athletes. In Study 1, factor structure of the developed items was tested using exploratory factor analysis, N = 112, M (standard deviation [SD]) age = 14.85(1.38) years. In Study 2, participants, N = 510, M(SD) age = 14.01(1.38) years, completed the BREV scale, and other validated measures of body image, physical self-concept, affect, emotion, and sport experiences. Across studies, the theorized two-factor structure for BREV (appearance and fitness subscales) was supported. Each subscale demonstrated adequate internal consistency, convergent validity, and discriminant validity. The appearance and fitness subscales of the BREV also appropriately integrated into existing and validated measures of body appearance and fitness self-conscious emotions (shame, guilt, authentic pride, hubristic pride, envy). The eight-item BREV measure is a reliable and valid measure of body-related envy in adolescent girls, furthering our understanding of this emotion within the context of girls sport.