Michelle shared her childhood picture to mark International Women's Day, posting the shot on Instagram with the caption:
'This #TBT is to mark International Women's Day. Here's a picture of me as a school girl to show solidarity with the 31 million girls around the world denied the right to go to school and fulfil their dreams. Stand #UpForSchool by signing the upforschool.org petition to secure a future where every girl around the world is educated and empowered to reach their potential. #IWD2015'
We love a good flashback picture anyway, but especially when it's for a great cause!