"Bare as you Dare" is the tagline for the World Naked Bike Ride. The 8th annual clothing optional event is part of something much larger. Over 74 cities  from over 17 countries across the world participate in the World Naked Bike Ride to protest oil dependency while simultaneously promoting positive body image. 

The Official Site

The Facebook Page

More info on the World Naked Bike Ride and it's history here.