Last night Maroon 5 held their 8th Annual Halloween Party at Hollywood Forever Cemetery drawing hundreds out to the Carnival-themed event. Complete with a fun house, carnival games, an In-N-Out Burger truck and copious amounts of booze it, was once again one of the best parties of the night. Robert Pattinson, Aaron Paul, Katy Perry and Aziz Ansari were just a few of the celebrity guests who hit the graveyard throwdown DJ'ed by Chris Holmes and Thom York as Daft Punk. Come take a look inside the party and check the costumes of the familiar faces who came out to celebrate our favorite Holiday.