There’s nothing understated about Lady Gaga’s “Monster Ball” tour. Twenty-one songs are performed over the course of four acts, with the pop star making over 15 costume changes. 40 gallons of water and fake blood are mixed together to make what is possibly the creepiest stage prop ever: a giant blood fountain! At one point in last night’s show, Gaga sprawled out on the piano and played it with her ass while simulating sex. But Scenestirz, all of this pales in comparison to what our sources spotted outside of Madison Square Garden. While superfans dressing up like their idols is nothing new, Lady Gaga’s “Little Monsters” take emulation to completely different level!