Fast-forward to the present day and, while the movement has a legion of celebrity supporters and is the subject of a feature film, women are still being censored on social media and in public.
Recently the hashtag started trending again, after a 17-year-old female student was trolled for posting a topless photo online.
Adda Þóreyjardóttir Smáradóttir, chairperson of the Feminist society at The Commercial College of Iceland, announced an upcoming “Free the Nipple” day at her school for 26 March to show support for the anti-censorship movement.
Her and a male friend posted separate photos of their nipples on social media. And lo and behold, while Smáradóttir received no backlash, she became the target of online trolls.
“It was difficult and I had to delete the picture for a few minutes, but it was enough to start a revolution,” she wrote in a Facebook post written in Icelandic, according to The Independent.
Before long the hashtag was trending with hundreds of Twitter users tweeting their bare breasts in solidarity.
The war against the censorship of women's bodies rages on, but this time it was clear who won the battle...