See videos of the Jonas Brothers serving slices at Joe's Pizza in NYC this weekend

Jonas Brothers fans in the New York area were able to celebrate the band's 20th anniversary a few different ways this past weekend: out in New Jersey, American Dream Mall hosted a giant JONASCON festival with live performances, DJ sets, panels and a slew of activation. 

In Greenwich Village, on the other hand, the iconic Joe's Pizza turned into Jonas Pizza on Saturday—with the three brothers and bandmates on site for a bit to sign autographs and snap some photos with the hundreds of fans that waited for them for up to six hours.

According to EV Grieve, Joe, Nick and Kevin also treated the public to a quick DJ set while in downtown Manhattan.

Inside the pizzeria, folks were able to get their hands on exclusive merchandise pieces like "Jonas Pizza" pizza boxes, T-shirts, hats and more.

Here is some footage from Saturday's extravaganza—which looked like a super-fun street fiesta: