A host of stars have shared their old school pictures to show their support for the #UpForSchool Petition and the need for all girls around the world to get an education.
A host of stars have shared their old school pictures to show their support for the #UpForSchool Petition and the need for all girls around the world to get an education. They include singers Shakira and Pixie Lott, supermodel Heidi Klum and TV celebs Miranda Hart and Kelly Osbourne.
International Women's Day is on March 8 - but 31 million girls are deprived of even the most basic primary education and two-thirds of them will probably never go to school.
A World at School asked people to mark Throwback Thursday (TBT) today by posting a picture of themselves at school on social media - and to stand up for girls' education by asking people to sign the #UpForSchool Petition. It's a youth-led campaign that calls on world leaders to keep their promise to get all children into school and learning without danger or discrimination.
A World at School co-founder Sarah Brown led the way with school photos of herself and husband Gordon, the former British prime minister and now United Nations Special Envoy for Global Education. Sarah said: "This International Women's Day we can all stand #UpForSchool for the next generation and ensure that they have the opportunity to grow, learn at school and lead."
Check out the celebrity postings below from Twitter, Facebook and Instagram - and then follow our International Women's Day blog, which brings you news, pictures and comment from events around the world. You'll also find lots more famous people sharing their old school photos there.
Colombian singer and education activist
A World at School co-founder
Ex-UK Prime Minister and UN education envoy
Indian star of Bollywood films
British star of Downton Abbey and singer
Chinese classic pianist
British pop star
Founder of Huffington Post website
American singer and activist
British star of TV's Downton Abbey
Ex-Australian prime minister, now head of Global Partnership for Education
British star of TV's Miranda Show and Call The Midwife
American star of children's TV show Sesame Street
British-American TV star, fashion designer, singer
British actress from Harry Potter films