Social norms shape attitudes and subsequently behavior. People conform to a norm if they believe others follow it, or if they believe others expect or prefer them to do so. A social norm is held in place by the reciprocal expectations of people within the group. An individual’s personal attitude or preferences can differ from the social norm. In many parts of the world, social norms may disproportionately affect VYAs and especially girls. Addressing and understanding the mechanisms behind the prevailing social norms that persist in an area is crucial to establishing gender-equitable, nonviolent and supportive communities. Further, establishing equitable gender norms also helps ensure that girls and women are able to make informed, healthy decisions concerning their reproductive health.