01of 16RIHANNANCP/Star Max/GC ImagesRihanna’s group of friends turned to the Ninja Turtles for costume inspiration in 2014. The singer choose a Raphael outfit, complete with twin sai.
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RIHANNA
NCP/Star Max/GC Images

Rihanna’s group of friends turned to the Ninja Turtles for costume inspiration in 2014. The singer choose a Raphael outfit, complete with twin sai.
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ADELE

03of 16JENNA DEWAN & CHANNING TATUMJenna Dewan/InstagramThe then-coupleteamed upasThe Nightmare Before Christmas' Jack Skellington and Sally last year. Nowthat’sHalloween.
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JENNA DEWAN & CHANNING TATUM
Jenna Dewan/Instagram

The then-coupleteamed upasThe Nightmare Before Christmas' Jack Skellington and Sally last year. Nowthat’sHalloween.
04of 16LADY GAGALada Gaga/InstagramGaga may have worn her fair share of over-the-top outfits over the years, but even diehard fans could have missed her in this spookily on-pointEdward Scissorhandslook.
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LADY GAGA
Lada Gaga/Instagram

Gaga may have worn her fair share of over-the-top outfits over the years, but even diehard fans could have missed her in this spookily on-pointEdward Scissorhandslook.
05of 16LEBRON JAMESLebron James/InstagramAnd now we’re going to have nightmares about anNBA player-sized Pennywisecoming after us. Perfect.
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LEBRON JAMES
Lebron James/Instagram

And now we’re going to have nightmares about anNBA player-sized Pennywisecoming after us. Perfect.
06of 16VANESSA HUDGENSTake Hudgens' advice, and use your skeleton makeup as a way to hide from people you don’t want to talk to and as an excuse to chill on the couch with the decorations all night.
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VANESSA HUDGENS

Take Hudgens' advice, and use your skeleton makeup as a way to hide from people you don’t want to talk to and as an excuse to chill on the couch with the decorations all night.
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HEIDI KLUM
Andrew Toth/WireImage

08of 16KATY PERRYSource: Katy Perry/InstagramShe’s been #WithHer since before the Iowa caucuses, but Perry took her support of Hillary Clinton to the next level with her insanely elaborate Halloween costume. Though her red pantsuit is standard Clinton attire, it’s the prosthetics and makeup that really make her look part.Having her “Bill” — agent Michael Kives — at her side doesn’t hurt, either!
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KATY PERRY
Source: Katy Perry/Instagram

She’s been #WithHer since before the Iowa caucuses, but Perry took her support of Hillary Clinton to the next level with her insanely elaborate Halloween costume. Though her red pantsuit is standard Clinton attire, it’s the prosthetics and makeup that really make her look part.Having her “Bill” — agent Michael Kives — at her side doesn’t hurt, either!
09of 16ELLEN DEGENERESSource: ELLEN DEGENERES/InstagramWherever Sia goes, she’s incognito, so it’s to be expected that a Sia Halloween costume is disguise-worthy, too! We never would have recognized DeGeneres under all that hair.
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ELLEN DEGENERES
Source: ELLEN DEGENERES/Instagram

Wherever Sia goes, she’s incognito, so it’s to be expected that a Sia Halloween costume is disguise-worthy, too! We never would have recognized DeGeneres under all that hair.
10of 16MARC JACOBSSource: MARC JACOBS/InstagramHe found success as a fashion designer, but Jacobs might have missed his true calling — makeup artist! You’d have to do a double (or triple!) take to recognize the style maven this Halloween in his female body builder costume, which includeds some epic eye makeup and intense muscles.
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MARC JACOBS
Source: MARC JACOBS/Instagram

He found success as a fashion designer, but Jacobs might have missed his true calling — makeup artist! You’d have to do a double (or triple!) take to recognize the style maven this Halloween in his female body builder costume, which includeds some epic eye makeup and intense muscles.
11of 16NINA DOBREVThe year of the Olympics always brings a few Olympic-inspired Halloween costumes. In 2016, Dobrev nailed Ryan Lochte’s look so well that she even “fooled” hisDancing With the Starspartner Cheryl Burke!
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NINA DOBREV

The year of the Olympics always brings a few Olympic-inspired Halloween costumes. In 2016, Dobrev nailed Ryan Lochte’s look so well that she even “fooled” hisDancing With the Starspartner Cheryl Burke!
12of 16COLTON HAYNESSource: COLTON HAYNES/InstagramNot even Jim Henson could have imagined a Miss Piggy this lifelike. Haynes’s costume was the ultimate disguise: Between the makeup, the snout, the boots, the outfit, and of course, the boobs, it’s near impossible to see the actor as anything other than Miss Piggy!
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COLTON HAYNES
Source: COLTON HAYNES/Instagram

Not even Jim Henson could have imagined a Miss Piggy this lifelike. Haynes’s costume was the ultimate disguise: Between the makeup, the snout, the boots, the outfit, and of course, the boobs, it’s near impossible to see the actor as anything other than Miss Piggy!
13of 16RYAN LOCHTESource: RYAN LOCHTE/InstagramDobrev may have been incognito as Lochte, but the man was pretty hard to recognize himself! He wore a bright orange wig and plenty of face paint for his costume as the Mad Hatter. Fiancée Kayla Rae Reid was a bit easier to identify in her matching Alice costume.
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RYAN LOCHTE
Source: RYAN LOCHTE/Instagram

Dobrev may have been incognito as Lochte, but the man was pretty hard to recognize himself! He wore a bright orange wig and plenty of face paint for his costume as the Mad Hatter. Fiancée Kayla Rae Reid was a bit easier to identify in her matching Alice costume.
14of 16SARA SAMPIOSource: SARA SAMPIO/InstagramIf you ran into Sampio on the street, chances are you had quite the scary Halloween. The model’s rendition of Samara from The Ring was way too true-to-life for comfort.
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SARA SAMPIO
Source: SARA SAMPIO/Instagram

If you ran into Sampio on the street, chances are you had quite the scary Halloween. The model’s rendition of Samara from The Ring was way too true-to-life for comfort.
15of 16MARTHA STEWARTSource: MARTHA STEWART/InstagramStewart has conquered all things home, kitchen and really, the world, so it’s only time she takes on Hollywood, too. The domestic goddess made quite the transformation to an ultra-glam Marilyn Monroe.
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MARTHA STEWART
Source: MARTHA STEWART/Instagram

Stewart has conquered all things home, kitchen and really, the world, so it’s only time she takes on Hollywood, too. The domestic goddess made quite the transformation to an ultra-glam Marilyn Monroe.
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LEONARDO DICAPRIO
Splash News Online

source: people.com