When it comes to Halloween shopping, Paris Hilton believes three heads are better than one.
Hilton and her BF Cy Waits ... and two of her dogs ... hit a West Hollywood costume shop yesterday ... and (surprise!) tried on a bunch of really provocative outfits!
Trick or treat?
Paris Hilton -- Heads and Shoulders
10/22/2010 6:20 AM PDT BY TMZ STAFF
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