Adolescent girl-to-girl bullying is a pervasive concern in schools across the United States. In this article, the authors describe the possible negative effects of girl-to-girl bullying on adolescent females' development and well-being and describe wellness as it relates to personal and social, academic, and career development of adolescent girls. Finally, the authors suggest relevant wellness-based interventions for school counselors to implement in individual counseling and planning, small group counseling, and large group classroom guidance curricula.