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

JAMES GANDOLFINI

Don't mess with the menacing Sopranos star, dressed as Jason (from Friday the 13th), while out with his kids on the mean streets of N.Y.C. in 2007.