Photo Credit: Kevin Mazur/Wireimage
While filming footage for her new HBO special, police were forced to step in and control the frenzy that the superstar's appearance had caused. As Gaga and her dad, Joe, visited a local deli in downtown Manhattan, hundreds of "Little Monsters" flocked to the scene, hoping to get a glimpse of their favorite singer.
We imagine the Grammy winner's outfit (just a leather jacket and tights) didn't help the situation, either.
Later that night, Gaga took the stage at N.Y.C.'s Madison Square Garden for the first of two concerts, which are also being filmed for the cable network's special.