Trafalgar Square was host to a massive pillow fight today as people marked World Pillow Fight Day.
Feathers were flying as hundreds of people gathered to bash the life out of their old pillows.
The flashmob pillow fight was set up by a group called Urban Playground Movement who organise other such events around the world.
Pillow fights have been taking place in cities around the world and it is the fifth year that a mass pillow fight has taken place in London.
There are only 2 rules:
Don't hit anyone with a camera and don't hit anyone without a pillow...
This is the friendliest fight you've ever seen!