Didn't get invited to a Halloween party this year? Its ok live vicariously through us via JustJared.com and Kate Hudson.Gwen Stefani is princess perfect as Cinderella at Kate Hudson’s annual Halloween party on Saturday (October 29) in Pacific Palisades, Calif. The 42-year-old No Doubt rocker was joined at the bash by some of Hollywood’s best costumed celebs! Emma Roberts donned a playboy bunny look and was accompanied by her beau Chord Overstreet who was a lumberjack hipster! Nicole Richie looked like the spitting image of Jennifer Lopez in her valour jumpsuit with her slicked back hair. Alessandra Ambrosio was a beautiful white swan, while Jessica Alba chose a darker look as a witch. Casey Affleck was a courteous farmer, and Topher Grace dressed as Mr. Rogers! Dancing With the Stars‘ David Arquette, as Elvis, and Chaz Bono, left the evening’s festivities together. Rashida Jones got in the Halloween candy spirit by wearing a blow-pop costume. Ali Larter was a beautiful bumble bee...