Christina Aguilera demanded a seat at Maroon 5’s annual Halloween bash at Hollywood Forever Cemetery Monday. The diva and her boyfriend Matthew Rutler dressed as pirates, and, a witness said, Xtina “didn’t want her heels to sink into the grass so she asked two guys to move a red couch so she could sit down.” She also hung in a VIP area at the Bacardi party with Adam Levine and Anne V, who dressed as Axl Rose and Stephanie Seymour from the “November Rain” music video.