The World Association of Girl Guides and Girl Scouts (WAGGGS) is the largest organization for girls and young women with over 10 million members across 146 countries. It was established in London in 1928 to serve as an umbrella organization for national Girl Guide and Girl Scout organizations. WAGGGS aims to empower girls and young women to reach their full potential as global citizens through leadership opportunities offered by its five international centers and annual events like World Thinking Day.