LONDON, ENGLAND - APRIL 06: Revellers take part in a giant pillow fight in Trafalgar Square on 'International Pillow Fight Day' on April 6, 2013 in London, England. Mass public pillow fights have been arranged in numerous cities around the world as part of the 'Urban Playground Movement' which facilitate free, public non-commercial events. (Photo by Oli Scarff/Getty Images)
Grab a pillow and head to the Washington Monument Saturday for International Pillow Fight Day.
You can celebrate with others in the fluffy faceoff Saturday afternoon. Crowds will gather at 2 p.m. near the monument facing the World War Two Memorial.
The pillow fight is free, but bring your own pillow.
There are a couple of rules:
• No down pillows
• No eye glasses
• Keep hits light and "friendly”
• Bring a trash bag to help clean up