People.com's Halloween Party

Star Halloween Costumes of 2011

From Fergie's pageant queen to Jennifer Garner's witchy woman, see Hollywood's wild and wacky getups

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KIM KARDASHIAN

Meanwhile, the real Kim made a solo appearance as Batman bad girl Poison Ivy at a Midori-sponsored party at New York nightclub Lavo on Oct. 29. Two days later, the newlywed filed for divorce from husband of 72 days Kris Humphries.