Celebrity Halloween Costumes: Indians, Mermaids and American Psychos!

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Indians, mermaids and fictional serial killers. Oh my!

In honor of Halloween, a slew of D-listers hit the red carpet of various parties in Las Vegas this weekend, decked out as famous Christian Bale characters, sexy mermaids, native Americans and more!

Who donned the most unique look? Click through now for larger versions of each image and sound off: What are YOU dressing as for Halloween?

Asuelu and Oliver's First Halloween with Kalani
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