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Iggy Azaela Instagram 2015

Iggy Azalea on Halloween 2015. We love this dig at the classic sexy cat costume. (Photo: Instagram)

Celebs Who Are Amazing at Halloween (And Have Been For Years)

Devon Kelley
Assistant Beauty Editor
Yahoo Beauty

Celebrity Halloween parties call for flawless costumes, and these stars have mastered the art of playing dress up. There's only one day a year that your alter ego gets to thrive, and these celebrities are letting their evil twins go all out. From ghostly apparitions to celebs becoming other celebs, take a tip from these pros to inspire your next spooky getup, even if you didn't get an invitation to Heidi Klum's annual Halloween party.