It's time to fluff up those pillows and ready your aim, because International Pillow Fight Day is coming to Atlanta again.

This weekend, Atlantans will gather at Grant Park for a massive two-hour pillow fight to have some fun, let loose and meet new people.

» PHOTOS: Atlanta celebrates International Pillow Fight Day

More than 50 cities around the world — including Budapest, Hungary; Barcelona, Spain; and Nashville, Tennessee — will be participating in the annual international event.

Last year, approximately 1,900 people attended Atlanta’s event.

Though the pillow fight is free for both adults and children, donations can be made to Sky's The Limit Travel & Social Club — a meet-up organization for people to come together and "live life to the fullest," according to the event's Facebook page.

» Photos: World Pillow Fight Day

The event will begin around 3 p.m. and last through 6 p.m. cleanup Saturday, April 1, at the corner of Cherokee Avenue and Sydney Street.

No feather pillows will be allowed and people are urged to “swing lightly,” take off glasses before participating and bring a garbage bag or rake to help with cleanup afterward.

More on the event’s Facebook page.