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Home » Seasonal » Halloween

These Are Probably Going to Be the Most Popular Halloween Costume Ideas for 2021

By Ashley Hubbard | September 16, 2021 | Updated on June 7, 2023 | Leave a Comment
This post may contain affiliate links that we collect a share of sales from. Click here for more details.
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If you need to set ten alarms before you actually wake up, then consider this one of your reminders that it’s time to figure out your Halloween costume.

These trending Halloween costume ideas for 2021 will have you looking your best for all your favorite fall activities, whether that’s picking pumpkins, watching Hocus Pocus, or picking out all the KitKats before the trick-or-treaters come.

Last year, it was all about what costumes you could wear with a mask. That’s still not a bad idea for this Halloween, but there are also plenty of new and classic pop culture references to inspire your outfit. From Bennifer to Bridgerton, here are some of our favorites. Maybe one day we’ll learn what comes after the letter B.

Halloween Costume Ideas 2021

19 Trendy Halloween Costume Ideas for 2021

1. Wanda Maximoff

WandaVision likely won’t be back for another season, but you can keep the time loop going by channeling your favorite witch. (Sorry, Sabrina.) Want to go meta Marvel? Wear Wanda’s Halloween costume from WandaVision, which is also a nod to her original Scarlet Witch costume.

If you find yourself in a relationship with a droid, they can dress up as Vision. And keep your phone charged for all the pictures you’ll take together!

What to Wear:

  • Wanda’s original costume from the Halloween episode or this Scarlet Witch costume.
  • Pink opaque tights
  • A red wig
Halloween Costume Ideas 2021 - WandaVision
Photo Credit: Marvel Studios

 

2. Loki Variant

The real question when it comes to choosing your Loki costume is which Loki variant will you be? The classic Tom Hiddleston version complete with horned helmet? The Sylvie version? Or the crocodile? We’ll just say you can never go wrong with a costume that has a tail. Just watch out for closing doors.

What to Wear: This Sylvie costume or a horned helmet

Halloween Costume Ideas 2021 - Loki Variant Sylvie
Photo Credit: Disney+

 

3. Squid Game Players and Workers

Even though we’ve all been traumatized by this Korean hit, at least the Halloween costumes for it are comfortable! Try to get over episode six while you lounge around in your green tracksuit. Bonus points if you spill ketchup on it. And if you don’t feel like showing your face, suit up as one of the red guards.

What to Wear: This green numbered tracksuit and white shoes, or this red suit and helmet featuring a square, triangle, or circle.

Halloween Costume Ideas 2021 - squid game

 

4. Harley Quinn from Suicide Squad 2

After romping through Birds of Prey, Harley Quinn returns to Suicide Squad 2 in full harlequin chic. But, we stan a costume change, so if that’s not your cup of tea, you can always dress up in her red dress and combat boots combo pretty much any day of the week. Workplace dress code went out the window after a year of working from home, anyway.

Get the Look

  • Red dress and combat boots
  • Suicide Squad 2 costume
  • Blonde wig
Halloween Costume Ideas 2021 - Harley Quinn Suicide Squad 2
Photo Credit: DC Films

 

5. Cruella

We all learned a valuable lesson from Emma Stone’s Cruella: you can do a lot of sociopathic things, but as long as you don’t hurt the dogs you get a pass. Also, graying hair can totally be chic. So channel your inner evil fashionista with this simple red dress costume. Just leave the pups out of it, ok?

What to Wear: Red Cruella dress (comes with wig and long gloves)

Halloween Costume Ideas 2021 - Cruella

 

6. Lola Bunny from Space Jam

If you’ve ever wanted to dress up a sexy rabbit, now’s your chance. And you know what they say about rabbits. (They’re really good at basketball.)

What to Wear: This Lola Bunny costume

Halloween Costume Ideas 2021 - Lola Bunny
Photo Credit: Warner Bros. Pictures

 

7. Astronaut

Do you watch the Mars Rover on your lunch break, follow Elon Musk on Twitter, and “entertain” your friends with the latest black hole video you found on YouTube? Then this astronaut costume is right up your alley. Once the International Space Station adds a bowling alley, of course.

What to Wear: NASA astronaut costume

Halloween Costume Ideas 2021 - astronaut

 

8. Cher from Clueless

If Alicia Silverstone can relive her Clueless moments on TikTok, you can rock her iconic yellow plaid skirt and blazer for Halloween. As if you’d wear anything else.

What to Wear:

  • Cher costume
  • White knee-high tights
  • White shoes
Halloween Costume Ideas 2021 - Cher Clueless
Photo Credit: Paramount Pictures

 

9. Bridgerton

Bridgerton made history sexy. Dress up in your best Regency-era outfits and be on the lookout for your own Duke this Halloween. Here’s what to wear to go as Daphne, Queen Charlotte, or Penelope Featherington. Hopefully there’s a library in whatever haunted house you’re going to.

Daphne Bridgerton Costume:

  • Blue Dress
  • Gloves
  • Wig
  • Necklace

Halloween Costume Ideas 2021 - Daphne Bridgerton

Queen Charlotte Costume:

  • Dress
  • Hoop petticoat
  • Wig
  • Jewelry

Penelope Featherington Costume:

  • Dress
  • Yellow gloves
  • Headband
  • Wig

 

10. Ted Lasso

Ted Lasso reminded us how much we love Jason Sudeikis and football. Or eating stadium snacks while we watch other people play football. If you’re rocking this look this October, don’t forget the bold mustache and the quick one-liners, or you’ll look just like a disgruntled dad. And you wouldn’t want to offend neighbor Steve…

What to Wear:

  • Jacket
  • Pants
  • Mustache
  • Whistle
  • Aviator Sunglasses
  • Hat

Halloween Costume Ideas 2021 - Ted Lasso

 

11. Black Widow

Just like our library books from middle school, Black Widow getting her feature film was long overdue. By the time Scarlett Johansson’s lawsuit is sorted to her satisfaction we’ll probably have gotten this skintight costume on.

What to Wear:

  • Outfit
  • Red Wig
Halloween Costume Ideas 2021 - Black Widow
Photo Credit: Marvel Studios

 

12. Gossip Girl

Loving the new Gossip Girl reboot? Start with this schoolgirl outfit and dress up as one of the new characters, or go as an old school fave. Just remember, whatever you do, it’s likely going to end up on the Internet.

Halloween Costume Ideas 2021 - Gossip Girl
Photo Credit: CW

 

13. Olivia Rodrigo

Olivia Rodrigo’s debut album “Sour” brought all the feels, all the music videos, and some pretty great costume ideas. For a last-minute idea, cover your face with stickers. Or, rock this blue cheerleader uniform from “Good 4 U.” Which we won’t be saying if you beat us in debate next week.

Halloween Costume Ideas 2021 - Olivia Rodrigo Good 4 U
Photo Credit: Sony

 

14. Hand Sanitizer

If you wanted to dress up as hand sanitizer in 2020 but didn’t, now’s your chance. Don’t forget to spritz yourself with cheap tequila for the full effect. Cancun in 2012 has nothing on this!

Halloween Costume Ideas 2021 - purex hand sanitizer

 

15. Wednesday Addams

The Addams Family will never not be trending for Halloween. Nut there’s a new Wednesday Addams show coming to Netflix, so this year really is a perfect time to dress up as everyone’s favorite homicidal maniac. After all, they look just like everyone else.

What to Wear:

  • Dress
  • Black Wig
  • Black tights
  • Shoes

Halloween Costume Ideas 2021 - Wednesday Addams

 

16. Cassie from Promising Young Woman

In Promising Young Woman, Cassie goes from future doctor to taking revenge on predatory men. Props for the double major! Dress up in her sexy nurse costume and throw on a cotton candy-looking wig for a memorable party look. Bonus points if you can find one that’s edible. Payback really fires up our sweet tooth.

What to Wear:

  • Sexy nurse costume
  • Rainbow wig
Halloween Costume Ideas 2021 - Cassie Promising Young Women
Photo Credit: LuckyChap Entertainment

 

17. Lizzo or Cardi B from the “Rumors” video

We’ve started our Hercules live-action casting dream list and it includes Lizzo and Cardi B. There’s no official costume to purchase for this one, but basically find as much gold as you can and wear it. So, you know, your usual.

Lizzo costume:

  • Dress
  • Gold claw rings
  • Press-on nails
  • Gold chain necklace

Cardi B costume:

  • Gold top
  • White skirt
  • Sandals

Halloween Costume Ideas 2021 - Lizzo Cardi B Rumors

 

18. Beetlejuice

We may dress more like Lydia Deetz in real life, but Halloween is the perfect time to channel the ghost with the most. Make everyone’s millennium with this pinstriped suit combo, or put it together with the items below. If you’re lucky, you may finally use up all that purple eyeshadow from your leftover bar mitzvahs gift bags.

What to Wear:

  • Pants
  • Blazer
  • Green wig
  • Black high tops

Halloween Costume Ideas 2021 - Beetlejuice

 

19. Ghostbusters

We were always told to dress for the job we want. If that job involves destroying ballrooms with particle beams, nab this Ghostbusters costume and dress up as your favorite character. For the full effect, grab three friends to join you. Or your two cats and a snake plant.

Halloween Costume Ideas 2021 - Ghostbusters
Photo Credit: Columbia Pictures
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Ashley Hubbard
Ashley Hubbard
Ashley Hubbard is a freelance writer and creator. As a Darcy Magazine contributor, she covers all things related to nails, entertainment news, pop culture trends, and more. Additionally, she regularly writes interview-based celebrity stories for Coping with Cancer magazine and has written for other publications, including Let's Eat Cake, Roadtrippers, Greatist, and Healthline. She has also been featured by Impact Travel Alliance as a creative who is transforming travel, and by Matador Network as a vegan travel blogger you should be following on Instagram. 

Ashley is a Nashville unicorn (born, raised, and based), queer, vegan, and dedicated to leaving a positive impact through her life, work, and her website, Wild Hearted. 

When she's not writing, she's traveling, reading a book, trying not to kill her houseplants, worshiping her dog, or having an existential crisis. Follow her on Instagram, TikTok, Facebook and Twitter, and LinkedIn
Ashley Hubbard
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As an Amazon Associate we earn from qualifying purchases. This post may contain affiliate links from Amazon and other sites that we collect a share of sales from.
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