File photo - Feathers fill the air as hundreds participate in a mass pillow fight as part of the International Pillow Fight Day in New York's Washington Square Park.

About 100 people did battle with feather-filled pillows on Sunday in front of central Rome's Santa Maria in Trastevere church, to celebrate International Pillow Fight Day.

The pillow warriors, most between 18 and 30 years old, lined up face-to-face, then unleashed their fiercest pillow-fight moves when the church's bells rang at 6.00pm (16.00 GMT).

After about 20 minutes of battle, with clouds of feathers in the air and piled on the ground they threw down what was left of their weapons, then proceeded to lie down on them.

International Pillow Fight Day was launched in 2008. This year, events will be held from April 6 to 15 in dozens of cities including Belgrade, New York, London, Paris and Sydney. - Sapa-AFP