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These soon-to-be-stars clearly loved dressing up for Halloween before their big break ... but can you tell who these celebs are back when they were just little tykes?

Anne Hathaway, Ariana Grande and Cheryl Burke are just a few of the kiddos who donned a cute costume for the spooky season -- but good luck figuring out which one is them!

This actor is better known for hangin' with a group of dudes on TV ... but who is the mystery kid all ready for Halloween?

This '90s star took the world by storm with her hit show ... but is this witchy gal who you think it is?

English actor Peter Hinwood was 29 years old when he was cast as Rocky Horror -- the blonde Frankenstein-esque muscle man and one of Dr. Frank's creations -- in the 1975 horror musical "The Rocky Horror Picture Show."

Hinwood shared the big screen with Tim Curry as the lingerie-clad mad scientist who takes credit for Rocky, Dr. Frank N. Furter, Richard O'Brien as the doctor's long-haired servant and the castle's butler, Riff Raff ... and Susan Sarandon as the newly engaged gal who get stranded in the rain with a flat tire, Janet Weiss.

These lovely ladies have taken a more sinister approach to Halloween costumes over the years ... conjuring up the perfect witch costume for some frightful fun!

Vanessa Hudgens, Cardi B, Hailey Bieber, Jennifer Love Hewitt, and Elizabeth Banks are just a few of the women who've fallen under witchy spells -- but who takes the cake as the wickedest witch of the west?

Kendall Jenner donned an all-black witch costume, lookin' ready to brew some potions -- her pointy hat even looks like it was made with some fresh crows! 😬

Sharon Osbourne flipped the script on the cliché ... dressing up as Glinda the Good Witch from "The Wizard of Oz" instead of her counterpart, the more commonly mimicked Wicked Witch.

Celebrities usually like to hit up the club on Halloween wearing a costume that's too hot to handle ... but some take a different approach -- makin' the spooky season a family affair!!!

Ryan Lochte, Alec Baldwin, Kevin Jonas and more have teamed up with the rest of their fam in the past to pull off some killer group costume choices ... needless to say, they go ALL out.

"Saved by the Bell" actress Tiffani Thiessen sparked some magic with her husband Brady and their 2 kids ... dressing up as some beloved 'Harry Potter' characters.

Model Arianny Celeste struck a pose with her family ... going to infinity and beyond by dressing up as Buzz, Woody, and one of the Little Green Men from 'Toy Story.'

Before this kid was shreddin' the gnar and grinding the skatepark bowls, he was just a novice rider ... boarding the San Bernardino Mountains and watching his dad surf the San Diego waves.

This slick guy appears to be a smiling fella ... however, he's deemed as a monster on the slopes, and has 5 Olympic medals to show for it! Even though he recently retired from his sport, he isn't afraid to show you on Insta that he's maintained his ripped figure.

Need one more clue? He made a cameo in "Friends With Benefits" with Justin Timberlake and Mila Kunis.

Since Halloween is the one day a year a celeb can deck out as whoever they aspire to be ...  the stars are hanging up their Hollywood egos and busting out their best celebrity costumes!

Charli D'amelio put on her poker face and had a night out as Lady Gaga.

One famous look-a-like to another ... celebs are taking full advantage of dressing up as their fellow star-peers! From Ciara and Russell Wilson as Busta Rhymes and Janet Jackson to French Montana as The Weeknd, these stars and many more came to slay!

Offset went full on "Super Freak" as R&B musician Rick James.

Check out our gallery of stars twinning with their famous counterparts. After all, imitation IS the sincerest form of flattery, right?!

American actor Jimmy Workman was just 11 years old when he was cast as Pugsley Addams -- the oldest Addams child who isn't necessarily the sharpest tool in the shed -- in the fantasy/comedy film "The Addams Family" back in 1991.

Jimmy shared the big screen with Anjelica Huston as the positive mother who sees the best in everyone, Morticia Addams and Raul Julia as the father and patriarch who loves a good sword fight Gomez Addams.

He reprised his role of Pugsley in "Addams Family Values" in 1993.

Robert Englund's looks over the years are like a dream!

Here is a 44-year-old version of the long-time scary moviemaker looking quite supernatural during the "Horror Hall of Fame" Gala at Universal Studios back in 1991 (left). This was just a few years before he reprised his role of Freddy Krueger in "Wes Craven's New Nightmare."

And, 31 years later the iconic thrill-seeker recently brought his scariest pose to a film festival in Spain (right). He may not be in his signature striped sweater, fedora and razor-claw glove ... but he still cuts up the competition with one glance.

"One, two, Freddy's coming for you!"

The question is ...

Underneath this screaming and weeping caricature is a long-time actor who could definitely slaughter you in a round of wrestling, and when he's not playing the role of deputy sheriff, you can personally find him on Insta always committing and showing his love for horror.

Even though this buffy guy is most known for his thrilling film roles, he took a jab at the romance genre with Drew Barrymore in the late 90's. It's probably safe to say that this spooky figure has never been kissed.

It's time to GO BIG OR GOURD HOME with your pumpkin carvings, because Halloween is only days away!

If you're feeling frightened with your pumpkin creations, don't back down, because TMZ has got you covered with all kinds of celebrity stencils.

Coming to a doorstep near you! Cut out this year's hottest stars who've been trending at the top of your feed ... including Rihanna, Tyler The Creator, Gisele Bündchen and Howie Mandel.

Knock-on into our gallery of celebrity pumpkin stencils! Use the links to download and print out an easy-to-use PDF template to get right to it!

Ever since Pennywise from "It" crawled out from the city sewers, the sight of a clown has never been scarier ... complete with the thousand-mile stare and nightmarish blank smile. Scope out this receding monster and see if you can find the differences in the two spooky shots.

Pennywise has fled the Neibolt's house and is currently on display at the Icons Of Horror exhibit at Madame Tussauds in New York City. Before this terrorizing clown comes back to life, can you locate the minor changes?

"You'll float too!"

Celebrities often go all out when it comes to their Halloween costumes ... and a lot of them look smokin' hot in their garb, so we've gotta ask -- Who'd you rather?!

Cowgirls have always been a popular costume choice during the spooky season ... and Draya Michele & Kim Kardashian have been down this road before ... so which one's hogtied your heart?

Cardi B and Megan Thee Stallion are 2 of the hottest rappers in the game ... not only for their bars, but for their Halloween outfits, too! So who caught your eye?

Before this Miami native made her way out west to Los Angeles to be a model and movie star, she was putting on her most beautiful blue dress and posing for pictures in Silver Lake, CA.

It wasn't "2 Fast 2 Furious" for this gorgeous gal to make her way back to Miami where she was in Will Smith's "Miami" music video. This cute kid had some hard training days to accomplish everything she has, and that includes playing alongside Denzel Washington in two big movies.

A few thriller movies she's starred in include "Ghost Rider," "Lost River" and "Urban Legends: Final Cut."

As Halloween approaches, normies are looking for thrills -- and so are celebs ... which is exactly why a good amount of 'em are hitting Universal Studios for the best scares in town.

As you might know, Halloween Horror Nights is underway at the L.A. theme park -- and with some of the freakiest haunted mazes within reach in Hollywood ... it's no surprise that some A-listers are pouring in for their fair share.

Among some of stars who've shown up so far ... Billie Eilish, Jordyn Woods and her BF, Karl-Anthony Towns. While you'd think they'd be screaming, they're actually all cheesin'!

Bebe Rexha also popped in for HHH, but her visit seems to have been a little more fright-filled ... 'cause it looks like she's losing her head here. That, or just hamming it up for the camera -- could go either way.

Actress Kiernan Shipka also splashed down at one point this season. She looked a little more even-keeled than Bebe did alongside a bunch of monsters -- but that might have to do with her work on the 'Sabrina' witch show on Netflix ... which is scary as hell.

There's also Shawn Mendes, who swung by to pose with the performers and flash his pearly whites. The guy didn't look to be too afraid or anything.

The attraction's got a rep for being as in-your-face as possible in terms of trying to scare you ... but these folks aren't allowed to make actual contact, close as they might get.

That directive is likely applied even more so when it comes to the rich and famous who might swing by during Halloween-time ... in other words, these fine folks are at no real risk of being too scared or accosted.

As for the rest of us ... well, a little more so.

American actor Joey Zimmerman was just 12 years old when he was first cast as Dylan Piper -- the sarcastic Piper child who hates Halloween despite his ability to perform witchcraft -- in the Halloween fantasy film "Halloweentown" back in 1998.

Joey shared the screen with Kimberly J. Brown as the witch in training who leaves the mortal world with her siblings, Marnie Piper and Emily Roeske as the youngest Piper sibling and mischief-maker, Sophie Piper.

Zimmerman was also in the sequels including "Halloweentown II: Kalabar's Revenge," "Halloweentown High," and "Return To Halloweentown."

Before this sweet kid turned into a thriller and horror film actress, she was dressing up in her finest bride attire and growing up in Rhinebeck, NY.

She has played mysterious roles in the films "Scream 4," "The Blackcoat's Daughter" and "The Hunt."

Even though this cutie made her film debut at just 9 years old, her acting skills are sure to "Blow" your mind! She has shared the big screen with thriller master Johnny Depp -- who played Glen Lantz in the 1984 classic "A Nightmare On Elm Street" and Penelope Cruz who also went ultra spooky in "Gothika" back in 2003.