Justin Bieber Sets Up Shop in NYC ... Draws Massive Line

Justin Bieber's pop-up shop in SoHo is drawing a HUGE crowd looking to drop dough on his gear.

The Biebs set up shop for two days at VFILES on Mercer Street hawking merchandise from his current Purpose tour. Check out the photos ... shirts and hoodies are up for grabs on a first come, first served basis.

We'd say beat the rush, but ...