Celebrity Star Halloween Costumes of 2011 From Fergie's pageant queen to Jennifer Garner's witchy woman, see Hollywood's wild and wacky getups By Karen J. Quan and Kate Hogan Published on November 1, 2011 05:00 PM Share Tweet Pin Email Trending Videos 01 of 23 JESSICA ALBA & CASH WARREN GSI Media Did someone call for a superhero? The actress and her husband get into the Halloween spirit – she as a cat, he as Superman! – while trick-or-treating with their daughters in Pacific Palisades, Calif. 02 of 23 FERGIE Justin Campbell/StarTraks She's not afraid to shine! Channeling her inner Toddlers and Tiaras beauty queen, the sparkling singer is ready for her close-up at Heidi Klum's 12th annual Halloween party in New York. 03 of 23 BEYONCé Jackson Lee/Splash News Online She's pure honey! The then-pregnant star flaunts her burgeoning baby bump in a bumblebee costume after a Halloween meal at New York's Darby restaurant. 04 of 23 ALYSON HANNIGAN Flynet No stranger to celebrating the holiday, the How I Met Your Mother star adds a sweet touch to her scarecrow costume while trick-or-treating with her little pumpkin, 2-year-old daughter Satyana, in Santa Monica, Calif. 05 of 23 LAUREN CONRAD Charley Gallay/WireImage Say cheese! The reality star is cute as can be thanks to her spot-on Minnie Mouse ensemble at the Bacardi- and Maroon 5-hosted Halloween bash at L.A.'s Hollywood Forever Cemetery. 06 of 23 JENNIFER GARNER Erick Kauffman/Broadimage The expectant mom shrouds her burgeoning belly in a simple black and purple witch's costume in Brentwood, Calif. 07 of 23 HARRISON FORD & CALISTA FLOCKHART Pacific Coast News Rock and roll! Ford and Flockhart flaunt their love for '80s hair bands at a Halloween night bash in Brentwood, Calif. 08 of 23 NAOMI WATTS Said Elatab/Splash News Online The actress can't help but clown around while trick-or-treating with her boys Sasha, 4, and Kai, 2, in N.Y.C. 09 of 23 MATT LAUER & ANN CURRY Stephen Lovekin/Getty Congratulations are in order! The Today cohosts give royal watchers something to cheer about as the Duke and Duchess of Cambridge during the morning show's Halloween taping in N.Y.C. 10 of 23 KELLY RIPA & NICK LACHEY Humberto Carreno/StarTraks The Live! host and Lachey take their costumes to new heights Monday as reality TV's most buzzed-about (and now broken-up) couple, Kim Kardashian and Kris Humphries, during the chatfest's Halloween Headliner Ball in New York City. 11 of 23 KIM KARDASHIAN Dave Kotinsky/Getty 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. 12 of 23 GWEN STEFANI X17online Sans Prince Charming, the pop star makes her fairy tale fantasy come true, stepping out as Cinderella for a Halloween party in Los Angeles on Oct. 29. 13 of 23 HEIDI KLUM Broadimage The costume enthusiast strips down – literally! – as a cadaver, displaying every muscle in her body for her Halloween party at Tao Las Vegas on Oct. 29. 14 of 23 NICOLE RICHIE Zuma Just call her Nicky from the Block! With a pink Juicy Couture tracksuit and big hoop earrings, Richie busts out her best J.Lo impression for Kate Hudson's annual costume party in L.A. 15 of 23 BETHENNY FRANKEL Chris Weeks/WireImage Hello, kitty! Frankel is picture purr-fect as the fictional feline during Heidi Klum's costume bash in Las Vegas. 16 of 23 ANDERSON COOPER Tom Zuback/Warner Bros. Daytime TV now has not one, but two silver foxes – thanks to the CNN anchor, who pays homage to talk-show legend Phil Donahue during a taping of Anderson on Oct. 31 in New York. 17 of 23 RASHIDA JONES Flynet Who needs a sugar fix? The Parks and Recreation star gets a taste of the sweet life, hitting Hudson's Halloween shindig as a Charms Blow Pop. 18 of 23 ALI LARTER & HAYES MACARTHUR Flynet The actress and her hubby create a little buzz in coordinated bumblebee costumes while at Hudson's bash. 19 of 23 COCO & ICE-T INF The Ice Loves Coco stars make a menacing pair – he as Silence of the Lambs' Hannibal Lector and she as a sexy little devil! – while cohosting the Halloween Player's Ball at LAX nightclub in Las Vegas on Oct. 29. 20 of 23 MARIAH CAREY & NICK CANNON Fresh Air Fund/WireImage The Incredibles to the rescue! Halloween came a little early for Carey and hubby Nick Cannon, who dressed up their 6-month-old twins, Moroccan and Monroe, in matching superhero disguises. 21 of 23 SANDRA BULLOCK GSI Media Shiver me timbers! Bullock and 20-month-old son Louis dress the part during a pirate-themed birthday party on Oct. 9 in Brentwood, Calif. 22 of 23 RACHAEL RAY David E. Steele/Disney/ABC The talk show host finds herself in a fairy tale as Little Red Riding Hood while guest Jerry Springer goes Gaga during a segment for her show on Oct. 25. 23 of 23 MARISKA HARGITAY Will Ragozzino/BFA Welcome to the witching hour! The Law & Order: SVU star (and mom of three) casts a spell over her little pumpkin, 6-month-old daughter Amaya Josephine, during the Light Up a Life benefit in New York City on Oct. 22.