This chapter argues that women have contributed extensively to the promotion of gender cosmopolitanism in Southeast Asia. It showcases hijab activists as well as female intellectuals and their interrogation of the excesses of Western feminism. These women have questioned the insularity of a segment of the Southeast Asian community and have courageously campaigned for their inclusion in workplaces that are prejudiced against women who wear headscarves. In campaigning for the hijab and presenting the modesty of Muslim women in innovative ways and styles, these women have revolutionised the concept of modesty in modern societies while reformulating commonplace understandings of gender justice in Muslim Southeast Asia.