ActionAid's top priority is to end the inequality that keeps women and girls locked in poverty, and to restore the rights denied to them from birth - a fantastic charity which operates all around the world.
Big Me Day is the opportunity to come to school dressed as whatever or whoever you'd like to be when you're a grown up!
As always, there have been lots of fantastic ideas! Everything from a headteacher to an astronaut!
Everyone thoroughly enjoyed dressing up for such a fabulous cause, a lovely way to end the half term!
Have a look at the gallery.