Girls continue to be the largest excluded group in the world. They face discrimination and abuse simply for being young and female. At all stages of their early lives up to adulthood, girls face distinct disadvantages that are directly related to this double discrimination. This report aims to strengthen girls’ position in international law and to highlight their challenges. It reveals the extent to which international law overlooks girls’ rights, effectively rendering girls invisible. Rarely are girls mentioned as a specific demographic in international law and where they are, there is a failure to fully reflect the barriers that they face. The report also recognises that millions of girls are disproportionately disadvantaged in education, health, work and family life – particularly in the world’s poorest countries. When factors like poverty, ethnicity or disability intersect and where gender stereotyping and unequal power relations prevail, girls’ disadvantage is magnified.