North West is the cutest baby skunk we've ever seen.
Katy Perry as a Flamin' Hot Cheeto is kind of amazing. That Cheetos handbag? We're obsessed.
10 minutes to put together a costume? OK, Sarah Hyland wins.
Alessandra looks super-scary, yet still super-chic.
This is so Rachel Zoe.
We think this is most likely a bat costume, but even if it isn't, the girl still looks great.
Kelly Osbourne's scary maid costume is a little too scary for our taste.
We don't know what this is, exactly, but whatever, it's Taylor Swift.
O.M.G. Kate and Goldie for the win!
We've got to hand it to Liv Tyler -- this is super-cute.
This is beyond precious.
A very creative approach by Derek Blasberg.
Jessica Alba looks cool no matter what.
Kim Kardashian attends the 2nd annual Midori Green Halloween Party at Avenue.
Christina Aguilera and ex-boyfriend Matt Rutler throws a Halloween Party at her house in Beverly Hills.
Stacy Keibler plays hostess at a Halloween masquerade party at Hyde Bellagio.
Paris Hilton and ex-boyfriend, Sean Combos, make their way to Hugh Hefner's Halloween Party.
Fergie shows off her sexy side for Halloween in a skin-tight cat suit. MEOW!
Actress Jenny McCarthy arrives at the Gallery Nightclub at Planet Hollywood Resort & Casino to celebrate Halloween and her 40th birthday.
One Direction boy band member Liam Payne gets into the Halloween spirit and leaves Funky Buddha nightclub dressed in a Batman.
Kyle Richards attends the sCare Foundation's 2nd annual Halloween benefit event at The Conga Room at L.A. Live.
Diddy, Sean Combs, pays homage to Prince with his recent Halloween costume.
Actress Peyton List attends the 2012 'Dream Halloween' presented by Keep A Child Alive at Barker Hangar.
Heather McDonald attends Keep A Child Alive Presents 2012 Dream Halloween Los Angeles.
Paris Hilton attends the Maroon 5 Halloween Party sponsored by Bacardi held at Hollywood Forever Cemetary.
Kim Kardashian and Kanye West arrive at Kim Kardashian's Halloween party at LIV nightclub at Fontainebleau Miami.
Television personality Nicole 'Snooki' Polizzi arrvies to host a Halloween party at the Pure Nightclub at Caesars Palace.
Christina Milian celebrates the launch of her custom halloween cocktail recipe for HPNOTIQ Liqueur at Beacher's.
Reality TV personality Camille Grammer attends the 18th annual Dream Halloween Los Angeles at The Barker Hanger.
Actress Bella Thorne attends the Camp Ronald McDonald For Good Times 20th Annual Halloween Carnival at Universal Studios Backlot.
Heidi Klum gets fitted for her 13th annual Halloween party at finale sponsored by HobNob Wines, Svedka Vodka And Smartwater.
Hoda Kotb as Princess Eugenie, Kathie Lee Gifford as Princess Beatrice, Ann Curry as Kate Middleton and Meredith Vieira as Queen Elizabeth II appear on NBC News' 'Today' show.
Sara Haines, dressed as a very pregnant Victoria Beckham, arrives at the Halloween Edition recreating the Royal Wedding on the NBC 'Today Show'.
Nicole 'Snooki' Polizzi arrives at 'Nightmare In Jersey' Halloween party held at Jet Nightclub at The Mirage Hotel and Casino.
Fergie attends Heidi Klum's 12th annual Halloween party at the PH-D Rooftop Lounge at Dream Downtown.
Pink attends the Absolut 100 and Heidi Klum's Halloween Party at 1 Oak.
Michelle Tractenberg attends Heidi Klum's 12th annual Halloween party at the PH-D Rooftop Lounge at Dream Downtown.
TV host Kelly Ripa is seen in her Halloween costume ' Toddlers in Tiaras' at the ABC TV studios.
TV host Kelly Ripa is seen in her Halloween costume as Kim Kardashian with musician Nick Lachey as Kris Humphries at the ABC TV studios.
Audrina Patridge arrives at a Halloween party at The Bank Nightclub at the Bellagio.
Heidi Klum attends her 12th Annual Halloween Party at TAO Nightclub at the Venetian.
Busy Phillips and Daughter Birdie Leigh Silverstein at Barker Hangar.
Ann Curry as Amelia Earhart, Will Ferrell as Megamind, Tina Fey as Roxanne Ritchi appear on NBC News' 'Today' show.
Janet Jackson attends the 2010 Halloween Extravaganza at Lanvin Boutique.
Anne Hathaway attends the 2010 Halloween Extravaganza at Lanvin Boutique.
Kim Kardashian arrives to the PUR Jeans Halloween Bash held at STK and Coco De Ville.
Musician JC Chasez arrives in costume at the Pur Jeans Halloween Bash, held at the STG nightclub.
Actress Lo Bosworth arrives in costume at the Pur Jeans Halloween Bash, held at the STG nightclub.
TV personalities Kris Jenner and Lara Spencer attend Kim Kardashian's Halloween Masquerade at Stone Rose.
Actress Lauren Conrad arrives in costume at the Pur Jeans Halloween Bash, held at the STG nightclub.
Derek Hough (R) and Lance Bass (L) attend Kim Kardashian and PAMA's Halloween Masquerade at the Stone Rose.
Dakota Fanning during 13th Annual Dream Halloween party.
Hilary Duff and ex Joel Madden pose at the Halloween Mansion Party hosted by Haylie Duff.
Actor Jason Biggs arrives at Heidi Klum's Annual Halloween party at Happy Valley.
Anne Hathaway during Heidi Klum's Halloween Party at Marquee in New York City.
Heidi Klum attends Heidi Klum's Haunted Halloween Bash at LQ sponsored by CMA North America.
Angie Harmon arriving at Heidi Klum's 3rd Annual Halloween Bash at Capitale.
Host Jay Leno greets model Cindy Crawford dressed as Marilyn.
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With unlimited resources, celebs really know how to go all out for a party and Halloween is no different. From the cooky to the spooky, these celebrities bring the heat when it comes to their costume.
Who could forget Snooki's infamous pickle jumpsuit or Kim Kardashian's sexy superman costume? This year, grab some inspiration on what to wear and what not to wear from the people who do it best (and sometimes worst). So far this year, North West has our vote for best costume in her beyond adorable skunk costume.
Click through the gallery above to see the best and worst celebrity Halloween costumes.