(photo via Instagram)

5. Paris Hilton, because she has to resort to dressing as Miley Cyrus to get people to notice her now. What do you do when your attention-grabbing antics aren't grabbing the public's attention anymore? Dress up as someone who is doing a much better job of it for Halloween! Paris Hilton went as Miley Cyrus this weekend to a Playboy Halloween party, and everyone briefly remembered when it was Paris who was causing momentary, pointless outrage with her antics. Those were the days, weren't they? We were all younger, and Paris stuck her tongue out a lot less frequently. —SRD