Don't be scared -- these boo-tiful celeb Halloween costumes are full of boos and aahs!
Jenna Dewan Tatum and Channing Tatum
At daughter Everly's request, the Tatums gamely brought The Nightmare Before Christmas to life. "When your daughter asks for Sally and Jack, you give her Sally and Jack. Happy Halloween everyone ?," Jenna wrote on Instagram.
Chrissy Teigen and John Legend
The happy couple donned one of the coolest (and most impressively obscure) couples costumes, with Teigen donning Carmen Miranda's famously festive fruit-topped ensemble, and Legend decked out like a flawless Groucho Marx, in a reference to the late stars' 1947 musical comedy, Copacabana.
Carrie Underwood and Mike Fisher
"The only deer I am OK with @mfisher1212 'catching!' ? @catchindeers #HelpMe #happyhalloween #veganwifeproblems," the "Church Bells" singer joked of her and her NHL pro husband's couples costume.
The "Sorry Not Sorry" singer showed some serious skin, rocking a super sexy, black leather police costume with fishnet stockings. Lovato posted several pics to Instagram and captioned one snapshot, "Protect and serve. Happy Halloween."
The 22-year-old model teamed up with her BFFs Hailey Baldwin and Justine Skye (not pictured) to channel one powerful trio: the Powerpuff Girls! The ladies wore custom Bryan Hearns costumes to transform into Bubbles, Buttercup and Bliss for a party at Delilah Nightclub in West Hollywood.
The Mr. Robot star made for a very convincing Edward Scissorhands.
The country music singer went incognito for Halloween, slipping into a teddy bear costume to become Ted.
Zayn Malik and Gigi Hadid
The cute couple got playful as they showed off their costumes: Spiderman and Felicity Hardy.
Kourtney Kardashian and Younes Bendjima
The Keeping Up With the Kardashians star and her boyfriend hit the town as Bonnie and Clyde.
But how does he see where he's going?! McConaughey creatively transformed himself into a headless horseman for a neighborhood block party in Miami, Florida.
Jordyn Woods and Kylie Jenner
The BFFs posed for sultry shots as the devil and an angel.
Ariana Grande and Mac Miller
The pop star and the rapper paid tribute to the villains of Zoolander, with Miller rocking the iconic garish outfit of Will Ferrell's Mugatu, while Grande -- who actually has a cameo in Zoolander 2 -- rocked a skin-tight red bodysuit to go as Milla Jovovich's Katinka.
The "Monster" singer got serious about her Halloween costume this year, when she dressed up as a truly impressive Edward Scissorhands. Gaga shared a pic of her faithful costume to Instagram.
G-Eazy and Halsey
For their second couples costume of the Halloween season, the musical duo dressed up as Han Solo and Princess Leia. "Would it help if I got out and pushed?," Halsey joked on Instagram.
Dressed up like a skeleton, Washington showed off the Halloween stylings of her Scandal co-stars.
The "Shape of You" singer and his girlfriend, Cheery Seaborn, doubled up on pastel as pimps in pink for Halloween.
The queen of Halloween pulled off a costuming masterpiece yet again this year. The America's Got Talent judge killed it as Michael Jackson's "Thriller" werewolf at her 18th annual Halloween party at Magic Hour Rooftop Bar and Lounge at Moxy Times Square in New York City.
Keltie Knight and Vanessa Ray
Great minds think alike! ET's Knight and the Blue Bloods star both rocked their best denim dresses to portray Britney Spears at Heidi Klum's 18th annual Halloween party at Magic Hour Rooftop Bar and Lounge and Moxy Times Square in New York City, with their pals donning Canadian tuxedos to rep Justin Timberlake.
The Keeping Up With the Kardashians star shared a mirror selfie of another of her Halloween costumes to her Instagram story. Kardashian went as the Tin Man from The Wizard of Oz, opting for a less-bulky costume than one might usually picture for the character. She rocked a skin-tight silver bodysuit, with a heart-shaped clock hanging from her neck, an oil funnel as a hat and a realistic-looking ax by her side.
Butler's Willy Wonka costume was so good, we didn't even recognize him! The 47-year-old actor stepped out as everyone's favorite candy man at treats! Magazine's 7th Halloween Party in Los Angeles, which was thrown in partnership with Rolls-Royce Black Badge, Absolut Elyx and Perrier Jouet.
Drew and Jonathan Scott
What's better than one Wonder Woman? Two, of course!
Khloe Kardashian and Tristan Thompson
The cute couple flaunted their love for Game of Thrones with their flawless couples costumes. Kardashian went as Khaleesi, rocking a fur and leather-clad ensemble, while the Cleveland Cavaliers pro showed off his fit physique as Khal Drogo.
Justin Timberlake and Jessica Biel
The Timberlake family, including the stars' son Silas, transformed into Toy Story characters! Timberlake dressed up as Buzz Lightyear, while Silas became Sheriff Woody and Biel was all smiles as Jessie.
Sarah Michelle Gellar and Freddie Prinze, Jr.
The loved-up duo were too cute as Andie and Ducky from Pretty in Pink.
What a tangled web this spider witch weaves!
Gisele Bundchen and Tom Brady
"I just can’t resist an avocado!!" Bundchen joked of her couple costume with her NFL pro husband: avocado toast!
For her annual Hulaween bash, benefitting the New York Restoration Project, Midler went all out as Marie Antoinette.
Skylar Astin and Anna Camp
Party time! Excellent! The Pitch Perfect couple turned up at Bette Midler's 2017 Hulaween event as Wayne's World's Wayne Campbell and Garth Algar.
The Victora's Secret model co-hosted an intimate Halloween party in the Hollywood Hills with 1OAK co-owner Darren Dzienciol. Celebs at the bash included Scott Eastwood, Paris Hilton, Hailey Baldwin Tobey Maguire, Courtney Love, The Chainsmokers, Halsey and boyfriend G-Eazy, Tyga, Kevin Connolly, Marlon Wayans and Anwar Hadid with girlfriend Nicola Peltz.
Chance the Rapper
This is California love! The "Blessings" rapper and his lady did Tupac Shakur and Jada Pinkett Smith proud.
The songstress was spot-on with her portrayal of iconic actress Bette Davis in a series of black-and-white photos she posted to Instagram on Oct. 30. Grande was a dead ringer for Davis, rocking a sparkling gown and perfectly styled hair, while her longtime friend Doug Middlebrook was perfectly in-character as Joan Crawford, Davis' long-time bitter rival.
Sarah Paulson and Holland Taylor
Paulson looked adorable as a panda, while Taylor made for a killer Harley Quinn at M. Night Shyamalan's "Shyamaween" party in Philadelphia, Pennsylvania.
She can't escape Frozen! "When your daughter demands you BOTH be ELSA for Halloween...you GRIN AND FORKING BEAR IT," Bell joked on Instagram.
Alba didn't hide her baby bump behind a costume -- she embraced it, dressing up as Juno MacGuff alongside her pal, Kelly Sawyer, who posed as Juno's baby daddy, Paulie Bleecker.
Harley Quinn Smith
Jinkies! The Yoga Hosers star made for one awesome amateur detective - aka Velma from the Scooby-Doo gang.
The "Bodak Yellow" rapper embraced her inner Cruella de Vil for Bacardi’s “Dress to Be Free” event at the House of Yes in New York City. She performed at the soiree, and before she left the stage, she encouraged guests to dress however they want and be whoever they want, which is what the #DressToBeFree movement means to her -- and reminded fans that her stage name, Cardi B, is a nickname for Bacardi!
The Pretty Little Liars alum was unrecognizable as a zombie bride.
Holy Georgie! The Cleveland Cavaliers power forward was absolutely terrifying -- and unrecognizable! -- as Pennywise, the dancing clown from IT.
Meow! Jackson's State of the World tour director Gil Duldulao showed off the singer's Catwoman transformation.
Jamie Mazur and Alessandra Ambrosio
The Victoria's Secret model slipped into a skeleton onesie, while her fiance flexed his muscles as Deadpool.
The High School Musical alum dressed up as a Freakshow for her annual Halloween party. "What a night what a night. More pics to come ???," she wrote on Instagram.
Kathie Lee Gifford, Blake Shelton and Hoda Kotb
Will the real Blake Shelton please stand up? Gifford and Kotb clearly had a lot of fun dressing up as Voice coaches Miley Cyrus and Shelton on the Today show -- and the "Sangria" singer clearly didn't mind having a doppelganger, either!
Savannah Guthrie and Matt Lauer
Today's gone country! The morning show co-hosts looked ah-may-zing as Kenny Rogers and Dolly Parton, respectively, during Today's Halloween Extravaganza 2017.
The talk show host and celebrity chef turned her set into a medieval kingdom, and debuted her couples costume with husband John Cusimano and their dog, Isaboo, on her TV show on Oct. 31. The happy duo dressed up like the king and queen of the royal castle, while Isaboo was supposed to be a unicorn, but she was not down to rock the horn.
Vanessa and Nick Lachey
They may not have gotten perfect scores on Dancing With the Stars this season, but we give them 10s for their Bearded Woman and WolfMan costumes. "Our annual Lachey Halloween Party was a success! I Love having fun with this man!!!.... as a man! ? Happy Halloween!" Vanessa wrote on Instagram.
The Ingrid Goes West star did a spot on Wednesday Addams impression.
The Golden State Warriors point guard made for a surprisingly funny Jigsaw, riding around on a tricycle in costume.
Gabrielle Union and Dwyane Wade
The couple dressed up as R&B duo Milli Vanilli and nailed it with their on-point jackets, dreadlock wigs and moves!
Beyonce and JAY-Z
The music titans attended Kelly Rowland's Halloween party over the weekend, and decided to go as a different hip-hop power couple --Lil' Kim and Notorious B.I.G. The mother of three's costume appeared to be inspired by Kim's look in Missy Elliott's music video for "The Rain," while her husband rocked a 5001 Flavors leather jacket, jeans, and a white T-shirt that he accessorized with a cane, gold chains and sunglasses.
Ariel Winter and Levi Meaden
The Modern Family star and her boyfriend went to Matthew Morrison's seventh annual Halloween party as The Fifth Element's Leeloo and Korben Dallas.
We nearly swung from the chandelier when we saw the Sia-inspired costume Tisdale wore to BFF Vanessa Hudgens' and Austin Butler's Halloween party.
We bow down to Queen Naomi, who looked like a gilded goddess at the 2017 amfAR & the Naked Heart Foundation Fabulous Fund Fair in New York City on Oct. 28.
Paris and Prince Jackson
The brother-sister duo walked the red carpet together in funky Halloween costumes at Prince's event, the Heal LA and TLK Fusion Present the 2nd Annual Costume for a Cause, at the Jackson family home in Encino, California. Paris wore a purple dragon onesie along with some white facepaint, while Prince donned a black and white unitard with a hood.
Michael Strahan, Robin Roberts, Amy Robach, Lara Spencer and Ginger Zee
The Good Morning America cast dressed up as superheroes for their big Halloween show!
Kim Kardashian West
The Keeping Up With the Kardashians star donned three costumes this Halloween, including an Aaliyah get-up that caused some controversy.
The Real Housewives of Atlanta star put a sexy spin on IT's Pennywise.
Paris Hilton and Chris Zylka
The hotel heiress called herself and her boyfriend the "King & Queen of Halloween," but their amfAR fair outfits were actually Princess Jasmine and a gladiator.
"It’s Rick James B*tch! #Legend #RickJames," Usher wrote on Instagram.
The "Dear No One" singer also joined the Cruella de Vil train, though she had a Dalmatian by her side!
Happy birthday, Mr. President! The leggy model channeled Marilyn Monroe at the 2017 amfAR fair.
Kroy and Kim Zolciak-Biermann
The husband-and-wife duo tag-teamed as Playboy founder Hugh Hefner and a bunny. "In honor of an icon," the Real Housewives of Atlanta star wrote on Instagram.
The "Young" singer paid homage to Dolly Parton at the same soiree.
The GRAMMY award-winning singer stunned as a glam clown.
Kyle Draper and Laverne Cox
We dream of Jeannie and Major Nelson!
Darren Criss and Mia Swier
Don't cry for this Romeo and Juliet! "Well that was a fun Halloween Weekend. Thanks Nick Lang for the incredible homemade armor (Mia did EVERYTHING else), #LADayOfTheDead @hwdforever for the beautiful face paint, & @vanessahudgens for the photo booth!" Criss wrote on Instagram.
Josephine Skriver, Sara Sampaio, Jasmine Tookes and Lais Ribeiro
This is some terrifying model behavior! The stunning pals totally transformed for the Night of the Fallen party, presented by Marquee New York and Velocity Black, dressing up as Hannibal Lecter, a zombie Little Red Riding Hood, a black cat and X-Men's Mystique, respectively.
The "Sorry Not Sorry" singer was the perfect Selena Quintanilla.
Kim and Kourtney Kardashian
The sisters channeled Michael Jackson and Madonna's iconic appearance at the 1991 Academy Awards.
G-Eazy and Halsey
The cute couple donned their best Gatsby attire for her own Star Crossed Halloween party with Freixenet at The Majestic Downtown in Los Angeles on Oct. 28.
The 62-year-old actor terrified as one half of The Shining twins.
The 45-year-old actress won Halloween with a clever costume referencing her character's grisly demise in Se7en, her 1995 film with ex-fiance Brad Pitt.
The first rule of fight club should be to bow down to Kravitz and this spot-on Marla impression.
Sarah Hyland and Wells Adams
The Modern Family star and the Bachelorette favorite had fans wishing they were a couple thanks to their adorable matching Stranger Things costumes.
The pregnant model was a spooky skeleton.
Kim Kardashian and Jonathan Cheban
The BFFs perfectly channeled Sonny and Cher at the annual Casamigos Tequila Halloween Party in Los Angeles.
Amal Clooney and Cindy Crawford
Disco queens! Clooney and Crawford looked like they would have fit right in at Studio 54 -- but they were actually at the annual Casamigos Halloween Party!
Derek Hough and Hayley Erbert
The dancer couple hit up the Casamigos Tequila Halloween Party dressed as a bear and Wonder Woman.
That girl is poison! The "Anywhere" singer made us green with envy over her Poison Ivy costume at the KISS Haunted House Party in London, England, on Oct. 26.
The "New Rules" singer dressed up as Beetlejuice's Lydia Deetz for the same KISS soiree. On Instagram, she called the all-red bridal outfit "living my Winona Ryder dream."
"If she doesn't scare you no evil thing will," Conrad wrote of her Cruella de Vil costume.
The Halloween-obsessed starlet and her pal, GG Magree, celebrated holiday earlier, showing off their pitch-perfect costumes inspired by The Craft.
Jenna Dewan Tatum
The World of Dance host traded in her unicorn sparkles for "nature fairy" wings for her daughter's preschool Halloween carnival.
Her husband, meanwhile, was clearly inspired by her costume from last year -- he went to the party as a purple unicorn!
Someone was very excited for the arrival of the second season of Stranger Things! "There are two Eleven’s in town ? Thank you @Lyft for giving me the most radical free ride and for sharing my love of this brilliant show. #lyftstrangemode," she wrote on Instagram on Oct. 25.
The 29-year-old model was the cutest Minnie Mouse ever while celebrating Halloween at the Met in New York City.
Everyone wants to be a Power Ranger this year! The Bachelor alum showed off her multi-colored suit while visiting California's Glamis Sand Dunes. "Getting into character for ‘ween 2k17," she said of her costume, which came from Target for just $40. "Protecting the dunes. Unlimited amounts of sand in my ears & eyes."
Ryan Seacrest and Kelly Ripa
Live always has amazing Halloween costumes, and 2017 will be no different! The co-hosts showed off a preview from their big Halloween show: their take on The Handmaid's Tale!
Colton Haynes and Aisha Tyler
As is his Halloween tradition, this year Haynes went all out yet again, donning some major prosthetics to transform into Marge Simpson. He showed off his costume at Freixenet's 2nd Annual Black Magic Affair party at La Descarga in Los Angeles, where he hung out with a Walking Dead-channeling Tyler.
The Real Housewives of Atlanta star poked fun at "Roachgate," captioning her Halloween snap, "Roach Pest Control in full effect????."
Jerry and Jessica Seinfeld
For their second annual GOOD+ Foundation Halloween Bash in Culver City, California, on Oct. 22, the Seinfeld alum donned a race car driver suit, while his wife dressed up as a '50s diner waitress.
Mark Ballas and BC Jean
The Dancing With the Stars pro and his wife were weighed down with their elaborate hippie costumes at the 2017 Dream Halloween Costume Party, benefitting the Starlight Children's Foundation, in Los Angeles on Oct. 21.
All hail the King of Halloween! For his performance at the 2017 Maxim Halloween party in Los Angeles on Oct. 21, Derulo elaborately transformed into the Night King from Game of Thrones.
Maksim Chmerkovskiy and Peta Murgatroyd
The dance pros stepped out at Maxim's Halloween party as a dapper skeleton and vampire Little Red Robin Hood.
The American Pie alum turned up at the Maxim party as a sexy devil.
Oh, Marge! The Wedding Ringer star dressed up as the beloved Simpsons matriarch for Maxim's Halloween party.
The Bachelor star donned a sexy silver get-up for Maxim's Halloween party.
Sara and Erin Foster
The sisters battled for the first lady title as Melania and Ivana Trump, celebrating their on-point costumes with SVEDKA Vodka's Trump-themed cocktails at Beauty & Essex in Los Angeles on Oct. 17.
For Martha Stewart Living's October issue, the cooking queen dressed up in costumes inspired by artist Roy Lichtenstein.