The current thesis evaluates the Body IMAGEination program implemented to improve body image and health behaviors of adolescent girls at the nonprofit organization Girls Incorporated. The program goals were to teach program participants to (1) deconstruct media messages, (2) navigate negative appearance messages (3) encourage a healthy lifestyle and (4)understand normal development and puberty. One Hundred and twenty-four adolescent girls (ages 12-15) participated in the evaluation and completed pre and post tests on body satisfaction.It was expected that participants who completed the program would display improvements ingoals from pre-test to post-test and show improved body satisfaction. As hypothesized, results indicated that participation in the program significantly predicted improved satisfaction in sexual attractiveness, physical condition, and weight concern. Additionally, regression analyses indicated that greater ability to navigate negative messages from friends, family and peers predicted positive changes in weight concern.