Halloween 2018 came and went in the blink of an eye. Moms and mommies-to-be spent most of October trawling the internet for inspiration– looking to celebrities, in particular. Kendall Jenner and Gigi Hadid might swan around in itsy-bitsy costumes, but their baby bump days have yet to come.

Beyonce. Kourtney Kardashian. Reese Witherspoon. Jessica Alba. Celeb moms have been slaying the Hollywood circle with their Halloween costumes for years, and they've even done it while pregnant. When Jessica Alba was expecting, she literally went as a heavily pregnant woman– her Juno costume will forever grace Hollywood Halloween.

2018 has given us more new celeb moms than we could have ever expected. Kylie Jenner, Cardi B, and Khloe Kardashian all became first-time moms this year. When it came to Halloween, they were right on it. They joined famous celeb moms like Kim Kardashian, Jessica Biel, Christina Aguilera, Snooki, and Jessica Simpson.

It's time to take a look at celeb moms and families who have finally shared their awesome Halloween costumes. Fans loved Kourtney Kardashian's costume– she went as Ariana Grande. Kim K went as Pamela Anderson. Not all celebs dressed as other celebs, though. From the new to the established, here are 21 celeb moms and families who rocked Halloween 2018 with their costumes.

21 KYLIE JENNER & STORMI PART I: THE BUTTERFLY EFFECT

Everything about Kylie Jenner's life has changed. In February 2018, Kylie became a mom to Stormi. The pregnancy hiding was over, Stormi's arrival received a record-breaking 16 million likes on Instagram, and Kylie hasn't looked back. The glitz and glam are still there, but Kylie's "me, me, me" approach is now shared with Stormi.

This mommy and baby butterfly costume was the first of two that Kylie posted for Halloween 2018. Twinned in pink with oversized wings and black detailing, Kylie and Stormi looked adorable. The costume was obvious, but it was perfect for letting a little one join in the fun. "The Butterfly Effect" was Kylie's pic caption.

20 KYLIE JENNER PART II: STORMI WEATHER

You've got to admit, it's clever. For Part II of her mommy and baby costume, Kylie chose "Stormi Weather." Featuring Kylie as a rain cloud (complete with fluff) and Stormi as a lightning bolt, this costume was the perfect duo look.

The platinum blonde wig, shiny gold materials, and cute baby sneakers channeled Kylie's glam edge, but Kylie only had eyes for Stormi. She later joined her sisters for their joint Victoria's Secret Angels costume.

19 REESE WITHERSPOON: TIM BURTON WOULD BE PROUD

Reese Witherspoon basically comes with a mother's version of the "founding fathers" of Hollywood parenting. This actress and mom pulls out the stops every Halloween, and 2018 was no exception. At 42 years old, Reese also defies her age with youthful looks.

Reese's 2018 costume formed a family portrait with her husband, Jim Toth and their two sons, Deacon and Tennessee. Fans wondered where Reese's daughter, Ava was, but this teen may have been with her friends. "Happy Halloween, everyone! Have a spooky night!" was this pic's caption. The graveyard-esque bride look was perfect, as were Reese's stitches makeup and tousled hair.

18 GISELE BUNDCHEN: UNICORN LOVE

Supermodels have a way of using Halloween to flaunt their enviable physiques in super-skimpy outfits. Gisele Bundchen is a Victoria's Secret Angel with a little something different, though. This mother is more about the zen yoga lifestyle and peace vibes than the provocative underwear.

Looking 100% in love with her little girl here in a unicorn costume, Gisele didn't seem to be posing– she just seemed genuinely happy. All ready for bed in magical pastel onesies was perfect for a 5 year-old. "Unicorn love" was the caption to a pic of Gisele with her daughter, Vivian. Gisele is married to Tom Brady.

17 JESSICA BIEL & JUSTIN TIMBERLAKE: LEGO BATMAN

When it comes to Halloween, Jessica Biel and Justin Timberlake are Hollywood heavyweights. Every year, we wait for this couple and their son to out-do the competition (and they always do). In 2017, Jess and Justin were Toy Story characters with their son, Silas as Woody.

In 2018, the family chose LEGO and superheroes as their theme. They took their 3 year-old son, Silas trick-or-treating in The Lego Batman Movie costumes. Jessica was the super-villain, Harley Quinn. Justin was Lego Batman, and Silas wore a LEGO suit with a bat tie. "Out here fighting crime in these streets," Justin wrote.

16 EVA LONGORIA: SUPER BABY

This is just too cute for words. In 2018, Eva Longoria became a mother to a baby boy named Santiago. The Desperate Housewives actress had one of the most stylish pregnancies we've ever seen, but the focus here was 100% on her baby. Santiago is 4 months old. Eva held up her handsome baby for a love-filled pic that took Halloween and made it fun.

"Super Baby! #happyhalloween Check out my stories to see him fly!!!" was the caption to this pic of Eva and Santiago. The story videos on Instagram showed Santiago on his belly and the wind blowing his Superman cape.

15 KEVIN HART: MINIONS (FLAMES NOT REAL)

Halloween gets so much better when it's a family deal. Going all out this year, was the comedian and actor, Kevin Hart and his "Minion" family. Despicable Me is the movie that seems to have inspired this family 2018 costume, although we should clarify that those flames aren't real.

"Happy Halloween from the "Harts AKA Minions" was the caption to this family of 5's Halloween look.

Kevin and his wife, Eniko Parrish have 3 kids. That's 5 costumes, but this family nailed it. All dressed up in bright yellows, Gru's recreated sidekicks rocked the iconic overalls with some epic headgear.

14 CIARA: BLACK PANTHER (POWERS TOTALLY REAL)

With over 20 million Instagram followers, Ciara is a music star who knows a thing or two about power. Then again, behind the stage outfits and dance moves, there's a loving mother of two. For her family Halloween costume, Ciara chose Black Panther as the theme.

"Wakanda Forever!" Ciara captioned the pic. "Thanks to everyone who helped bring this look together!" Lupita Nyong'o, who plays Nakia even gave the costume a shout-out. Gleaming blacks, structured gold, and thigh-high boots finished Ciara's look, but the family perfected it. 1 year-old Sienna and 4 year-old Future joined their mom and dad. #Awesome

13 KHLOE KARDASHIAN PART I: MAMA AND BABY UNICORN

Khloe Kardashian may have joined her sisters in the family Victoria's Secret Angels outfit parade, but she left plenty of time for some mommy and baby time with True. In a series of Instagram pics, Khloe showcased some 2018 costumes that were 100% baby appropriate (and filled with love).

True is 6 months old. At this age, she is just old enough to find the little things in life that make her smile– although at that age, they are major discoveries. Khloe likely chose this pink unicorn onesie for its coziness, bedtime vibes, and her love of all things pink.

12 KHLOE KARDASHIAN PART II: SAFARI CUTIES

Much like Kylie, who wound up with no less than 5 costumes for Halloween 2018, Khloe and True went through a few costume changes.

"Happy Halloween part 2 from Baby True (I swear she loves dressing up)," was the caption to a series of costumes from Khloe and baby, True.

Fans saw a pastel pink unicorn onesie and a Pottery Barn kids giraffe costume, plus a pink pig outfit. This safari-themed costume had epic facepaint, all the fresh air in the world, and a baby who seemed to be having as much fun as her mom. Khloe has been through a rough time. She deserves all the happiness in the world.

11 SNOOKI: GOTHAM CITY TAKES OVER JERSEY SHORE

Nicole "Snooki" Polizzi is a celebrity who used to be frowned upon for her rowdy behavior and 20-somethings wardrobe. Now a mom of two, Snooki has done the biggest 180 ever. She also takes on Halloween like a pro. Previous years have shown us this family of 4 take on The Wizard of Oz, although in 2018, it was all about the superheroes.

It was more Gotham City than Jersey Shore for Snooki in 2018, as she posed with a 6 year-old Lorenzo and a 4 year-old Giovanna. Snooki used to swear by "Gym, Tan, Laundry" on Jersey Shore. Since becoming a mom though, Snooki has updated "GTL" to "Giggles, Toys, Love."

10 ALYSON HANNIGAN: BUBBLE, BUBBLE, TOIL, AND TROUBLE

There isn't a family in Hollywood that does Halloween quite like Alysson Hannigan and her family. The How I Met Your Mother actress makes trick-or-treating in Brentwood, CA an annual deal, and fans see the pics every year. We've seen pumpkin outfits and Lucky Charms getups from this family of 4, and this year was just as exciting.

Bubble, bubble, toil, and trouble seemed to be the theme with Alysson's witch-themed costumes this year. The 41 year-old actress donned a cauldron costume as she joined her husband, 6 year-old Satyana, and 3 year-old Keeva. The kids wore cat and witch-themed costumes.

9 KOURTNEY KARDASHIAN PART I: ARIANA GRANDE

Celebrities have been using Halloween to dress up as other celebrities for many years now. For Halloween 2018, Kourtney Kardashian took on Ariana Grande. She wore a puffy pink dress (that Ariana had worn during a 2018 TV appearance). With the high ponytail and a mic in her hand, Kourt looked exactly like the Sweetener singer.

"God is a woman" was the caption to Kourtney Kardashian's pic of herself as Ariana Grande.

Ariana herself did not appear to post any Halloween pics of herself this year. Following her shock split from Pete Davidson, we'll assume that she is taking it easy. Ariana has already released a new song referencing Pete, though.

8 KOURTNEY KARDASHIAN PART II: AUSTIN POWERS

Kourtney seemed quite worried about Halloween 2018. "My kids don't want to do group Halloween," she revealed. While this year didn't give us the full family getup that we've seen in previous years, we did still get a bit of family action. Following Kourt's Ariana Grande pic on Instagram (and a later shot of her in pink with Mason), we got the second round of costumes.

The 2002 movie, Austin Powers was the theme for this one. Kourtney dressed as Fook Mi, while Mason looked unrecognizable as Dr. Evil. Kim Kardashian's former assistant, Stephanie Shepherd also joined in the fun.

7 NEIL PATRICK HARRIS: HITCHHIKING GHOSTS

Neil Patrick Harris' family Halloween outfits are the kinds of #Goals that most families can only aspire to. This actor has worn The Wizard of Oz tin man outfits in the past, but 2018 was all about being spooky. Neil has been married to David Burtka since 2014. Together, they are parents to 8 year-old twins, Harper and Gideon.

Disney was more than welcome at this family for Halloween 2018. Dressed as characters from the Haunted Mansion Disneyland attraction, Neil put in a huge amount of effort into the Hitchhiking Ghosts costumes that he photographed in a series of snaps on Instagram. "Welcome, foolish mortals. We hope your Halloween is happily haunted," he wrote.

6 NORTH WEST & PENELOPE DISICK: STILL & SPARKLING

So cute! North West is now 5 years old (and just as famous as her mom, Kim Kardashian). North is also super close to her cousin, Kourtney's daughter, Penelope Disick. Together, they twinned as still and sparkling water for Halloween. They're also super close.

"Should we build tree houses and be neighbors?" Penelope has asked North. "Yeah," North replied. These two are like two peas in a pod.

Their Halloween costumes appeared to show Penelope peeping her face out of an oversized Perrier water bottle, while North did the same with a giant bottle of Fiji water. Well, you've got to stay hydrated!

5 SAINT WEST & REIGN DISICK: ALL ABOUT KANYE WEST

Kanye West must have had a lot to smile about with this costume. His son, Saint West joined Kourtney Kardashian's youngest boy, Reign for one of the most bizarre (but hilarious) Halloween costumes we've ever seen. Grinning inside their oversized Yeezy-esque boxes, these two recreated the "I Love It" music video, which features Lil Pump.

Kim posted a series of pics of the kids, plus a video of Reign appearing to fall face-down on the floor. "I love it," she captioned the post. Kanye has made major headlines of late on account of his controversial views, but let's remember, Kanye is a loving dad.

4 TIA MOWRY: BLACK PANTHER FAMILY FUN

Superheroes have dominated 2018. With Avengers: Infinity War breaking worldwide box office records, millions of us turned to the superhero world for Halloween inspiration. Snooki, Ciara, and Eva Longoria did, and so did the Sister Sister actress, Tia Mowry.

Chadwick Boseman would be proud. Tia Mowry, her husband Cory Hardrict, and their kids, Cairo and Cree got their Black Panther on for 2018. We got full bodysuits with paneling, black boots, masks, and an absolutely adorable splash of orange from their tiniest addition. "#HappyHalloween from the Hardricts! #blackpanther #wakandaforever" was Tia's caption. Gal Gadot even posted fan pics of Wonder Woman outfits this year.

3 LAUREN CONRAD: LITTLE BLACKBIRD

Lauren Conrad wasn't a mom during her time on The Hills, but she is now. For Halloween 2018, the fashionista teamed up with her son, Liam for a coordinated outfit that was incredibly cute (with just the right amount of spook) "I hope this little blackbird grows to <3 this holiday as much as I do!" Lauren wrote on Instagram.

"This year I wanted to depart from the cutesy costumes of Halloweens past and step into something a little more… spooky. Inspired the classic horror flick, I channeled my inner Hitchcock character and created my best Melanie Daniels from The Birds," she added.

2 CHRISSY TEIGEN & JOHN LEGEND

For Chrissy Teigen and John Legend, Halloween 2018 came with a #Hilarious costume. Not many celebs can pull off dressing up as Elizabeth. The real one is in her 90s. Chrissy added on a good half a century to her 32 years, but the result was worth it.

With her "old lady" handbag and the blue coats that she is frequently seen in, it was hats, gloves, and lols for Chrissy, who was joined by John as Phillip. Luna and Miles didn't join them for this pic, but this family's entire Instagram is #FamilyTime.