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Hello Kitty is celebrating it's 50th anniversary today and stars like Saweetie, Megan Thee Stallion and Kim Kardashian are rockin' some Kitty swag ... Check out our gallery and see all the stars who are obsessed with Hello Kitty!

These spooky stars decked out in Halloween costumes with their entire household, and it's a family affair! Why go to the club for Halloween when you can walk the neighborhood with Hollywood's cutest crews!

It was a Mario Bro's party with Jersey Shore's Deena Nicole who brought the pink with her finest Princess Peach costume, while her hubby and kids dressed as Luigi, Super Mario and Wario.

Tia Mowry snapped a spooky selfie before taking her and her kiddos on an alien adventure, while twin sister Tamera Mowry and her fam were feelin' "The Addams Family!"

American actress Heather Donahue was in her mid-20s when she shot to stardom after she played the teary-eyed student and amateur filmmaker who is featured in the found footage creepy film "The Blair Witch Project" back in 1999.

Heather Donahue shared the shaky screen in the documentary-style scary movie with Joshua Leonard ... who disappears into the haunted forest while looking for a way out, and of course Mike Williams ... who dumps the useless map into the river before being found in the basement in the creepy final moments of the film.

Celebs definitely threw some money at their Halloween costumes this year, and to avoid the paparazzi and camera craze ... stars hired their own crews to hard-launch their spooky looks ... and it's all for the 'Gram!

Full-on photo shoots went down for Christina Aguilera, who slayed as Stoker's 'Dracula,' while Keke Palmer stepped up to the throne with her son as Cersei Lannister from "Game of Thrones."

"Beetlejuice" was a fave among stars like Vanessa Bryant and James Charles ... both giving their own renditions and killin' it in the makeup department.

Lizzo crushed the Halloween game this year -- leveling up with several costumes such as a mighty mash-up of Edward Scissorhands and SZA, AKA "Edward SZA Hands."

The singer also painted her entire bod bright red and donned a voluptuous "hunny bunny" body suit corset. She topped off the look with a long blue wig.

She swiped this "Face Card" credit card costume on her social media ... A shoutout to Beyoncé's "Heated" from Bey's 2022 Renaissance album. The Yitty shapewear owner rounded out the costume with a black jumpsuit and held on tightly to some Chanel shopping bags.

The celebs are going all out for their Halloween 'fits, and we're rounding up the best costumes from this year's spooky season! Hope your trick-or-treat buckets and bags are empty, 'cuz we're about to fill you up with some Halloween goodies!

No question Tyga had a pro team help pull off his "Tales from the Crypt" look, but he absolutely crushed it, while Alix Earle fully committed to her Cheshire Cat transformation -- posing on a magic shroom 🍄!

The Chainsmokers, Andrew Taggart and Alex Pall, cooked up a spot-on rendition as Remy Ratatouille and Linguini ...

Step aside Sabrina Carpenter and Jenna Ortega, because Madi Monroe and Avani Gregg nailed Sabrina's "Taste" music video impersonation.

And once and for all, click your heels 3 times for Olivia Culpo and Christian McCaffrey's "The Wizard of Oz" costumes!

Spooky season is going out with a bang at the TMZ office ... and our staff is pulling out all the stops for Halloween, with costumes from the biggest moments of the year in pop culture ... and some classics too.

Harvey's setting the tone as Lana Del Rey's alligator tour guide husband Jeremy Dufrene ... and we've also got a fun spin on Justin Timberlake's DWI arrest.

Post Malone's getting a shout-out ... and we've got his favorite NFL team covered, with a trio of Dallas Cowboys cheerleaders.

Before they were superstars, these adorable kiddos loved dressing up for Halloween, but can you tell who these celebs are -- back before they were in front of the flashing lights?

Demi Lovato, Kendall and Kylie Jenner and Ethan Slater are just a few of the lil' tykes who sported a cute costume back in the day -- but good luck guessing which one is them!

This actress is known for her thrilling work in horror movies ... some may even deem her as the ultimate "scream queen!" But is this witchy gal who you think it is?

Even as a dressed-up princess, this singer couldn't "ignore the crazy visions of her living in LA" one day ... Can you guess who she is?

Celeb pet-parents can't hog all the fame, likes and candy; especially when their furry kids in Halloween costumes are just so cute and dandy! Today's spotlight is on the animals, so grab your treats; these four-legged stars have earned 'em!

Ready and "Hot To Go", Antoni Porowski dressed his fur-baby as Chappel Roan, while Ariel Winter managed to costume all her precious pups, and guess which celeb turned their lil' bulldog into a chili-dog?!

Before the clock strikes midnight tonight and the Halloween shenanigans commence, we're heading to Salem, Massachusetts and shouting out a spooky classic starring many Hollywood greats: The 1993 family/comedy film, "Hocus Pocus!"

The Sanderson Sisters -- played by Bette Midler, Sarah Jessica Parker and Kathy Najimy -- were 3 witches resurrected from the 1600s after the Black Flame Candle was lit by high schooler, Max Dennison (played by Omri Katz).

The town's kids were in danger of being sucked by the Sanderson Sisters' life potion. Max, along with his younger sister Dani (played by Thora Birch) and his high school crush Allison (played by Vinessa Shaw), were on a mission to stop the Sanderson Sisters at last!

Celebs in costumes always hits different, 'cuz when it comes to Halloween there's no stoppin' these stars from going all out! Sometimes however, they select the same look and it gets real tricky real quick! So, we've gotta ask -- Who'd You Rather?!

It's a given Paris Hilton and Megan Thee Stallion are both classy n' bougie, but which Sailor Moon are you choosing to rock your world?!

Beetlejuice, Beetlejuice! Celeb couples, Travis Barker and Kourtney Kardashian AND Maggie Lindemann and Jordan Clarkson dressed to impress ... but which duo hit the spooky 1988 classic out of the park?

It's a "Snow White" showdown between Avani Gregg and Charli D'Amelio ... if you had to choose one gal to hold your apple, who's it gonna be?!

Forget the naysayers and cut the cat-itude! ... stumbling upon a black cat is GOOD luck, and lucky for you ... we've got all the stars dressed up as black cats for Halloween. Check out gallery and see who's lookin' good and feline fine!