Emma Watson
The star rose to fame as brainy Hogwarts student Hermione Granger in the 'Harry Potter' film franchise and has applied her intellect to the real world.
Watson helped to launch the UN's HeForShe movement in 2014 and called for an end to the "man-hating" element of feminism.
She said: "The more I have spoken about feminism, the more I have realised that fighting for women’s rights has too often become synonymous with man-hating. If there is one think I know for certain, it is that this has to stop."