From music charts to executive boards, feminism is certainly in fashion. Yet some argue that once radical feminist ideas for the future have been harnessed for commercial gain. Are Beyonce and Simone de Beauvoir feminists really on the same side? How much do the second, third and fourth wave feminists share? Do successful women who make it to the top like Margaret Thatcher or Sheryl Sandberg risk reinforcing a man's world while doing little about gender inequality? Or as feminism eradicates current forms of gender inequality are new forms of social division inevitably created?