Halloween Costume Or Regular Celebrity Outfit?

Celebrities always seem to have the best Halloween costumes. Maybe it's because they have endless resources, or perhaps it has to do with their creativity, but one way or another, we're always eager to see what they'll be wearing.

Sometimes you don't have to wait until Oct. 31 to see celebs in outrageous outfits -- A-listers wear some pretty shocking things year-round. Check out the photos below and take your best guess: Halloween costume or regular clothes?

Nicky Hilton

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Lady Gaga

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Anna Dello Russo

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Hulk Hogan

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CeeLo Green

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Imogen Heap

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Ok Go

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Jamie Lee Curtis

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Tara Reid

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Ke$ha

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Alicia Keys

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Rita Ora

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Now these celebs are definitely wearing costumes:

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