People.com's Halloween Party

Silly, Sexy, Cool : Star Halloween Costumes!

From Mariah's naughty firefighter to Kim's Wonder Woman, see how celebs reveal their alter egos

JASON PRIESTLEY & FAMILY

The actor went back to his Canadian roots, dressing up as a mountie with his family, wife Naomi Lowde-Priestley and daughter Ava, then 1, at the 2008 Dream Halloween bash, held at the Barker Hangar in L.A.



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