Participants throw their pillows during the International Pillow Fight Day at Liberty Square, in Taipei, Taiwan. Photo by Reuters
Participants take part in International Pillow Fight Day in Kennington Park in south London. Photo by Reuters
People fight with pillows in Pariser Platz during World Pillow Fight Day in Berlin, Germany. Photo by Reuters
People fight with pillows during World Pillow Fight Day in Vienna, Austria. Photo by Reuters
Feathers flew in dozens of cities around the world as tens of thousands donned their PJs and grabbed their favourite pillow to celebrate International Pillow Fight Day.
The International Pillow Fight Day was founded in 2008 by the Urban Playground Movement and has steadily gown in popularity.
The free-for-all does have a handul of rules - no swinging at people with cameras or without pillows, soft pillows only, and clean up afterwards.
Otherwise, participants are encouraged to embrace the inner child and just have fun.
Customs vary from city to city, but participants often have an opportunity to donate their weapon of choice to a local homeless shelter at the end of the pajama-themed pummel-fest.
