The Free the Nipple movement has been around for a few years now, 2015 seemed to be when it really picked up steam. If you’re not familiar, it’s a campaign started by activist and filmmaker Lina Esco that challenges the double standards of toplessness — the name says it all. And what better way to protest that double standard than to actually, well, free the nipple? From celebrities to local activists to some especially creative designers, here are the most memorable ways we came face-to-face with Free the Nipple in 2015. It’s one cause we can all wholeheartedly get behind.