Katy Perry, global superstar, Super Bowl Halftime Show headscratcher and possible Christian hip-hop copycat, is not exactly the greatest pop star of our time. However, she might just be the greatest Halloween costume wearer of our time because just look at this giant Cheeto. She’s leading our unofficial celebrity Halloween costume ranking right now, although honorable mentions must go to Jessica Alba for her 
Slash costume and baby North West’s skunk getup….
