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Heidi Klum, whose annual Halloween party in New York draws A-listers from far and wide, dressed an old woman this year while Lily Allen transformed into a bright green alien.
Pageant queen and reality TV star Alana 'Honey Boo Boo' Thompson caused a stir as Kris Jenner, posing for pictures with her family who were dressed as the rest of the Kardashian clan.
Vote for who you think had the best outfit this Halloween...
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