Jessica Alba and Kelly Sawyer as Guns N Roses rockers Slash and Axl Rose.
The movie Mean Girls put it best: “Halloween is the one night a year when girls can dress like a total slut and no other girls can say anything about it.”
But, some celebrities — like Katy Perry, Jessica Alba and Taylor Swift — like to separate themselves from the pack and dress ~unsexy~ on the spookiest night of the year.
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