People.com's Halloween Party

Haunted Hollywood! Star Costumes of 2012

From Selena Gomez's pretty kitty to Miley Cyrus's hip-hop transformation, see famous faces in this year's disguises

KIM KARDASHIAN

She was the hostess with the most – expensive wig, that is. While getting spooky at the 2nd annual Midori Green Halloween in N.Y.C., Kardashian morphs into a mermaid, complete with blonde tresses that cost $2,000.