Kate Hudson's Halloween Party: Celebrity Costumes Galore!

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 velour 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. Nicky Hilton channeled her inner child and went with Little Red Riding Hood. Jennifer Love Hewitt and her new beau Jarod Einsohn dressed up as super couple Angelina Jolie and Brad Pitt!

Also in attendance at the big bash was Zooey Deschanel with a group of her gal pals, Chris Evans, Kevin Connolly, Judd Apatow, David Spade, and of course, Kate herself, who dressed as a shot girl.

Guests enjoyed food from the FatBurger tent, where burgers were plentiful. A glass dance floor covered the pool and Kate went all out with spooky decorations. Inside, there were sweets to snack on, as well as Mexican food.

FYI: Nicole is wearing a Juicy Couture neon velour hoodie and pants.

45+ pictures inside of guests at Kate Hudson‘s annual Halloween party…