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Best Harry Potter costumes perfect for your next costume party

Including Dobby, Dolores Umbridge and a Dementor...

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harry potter costume
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If you don't already own a Harry Potter costume (who ARE you?!) then feast your eyes on these magical buys you can snap up just in time for Halloween.

From Gryffindor and Slytherin house robes, to Hermione Granger-inspired uniforms, the classic outfits are definitely here. But if you're after something a little quirkier, like a Belatrix Lestrange, Luna Lovegood or Sybill Trelawney costume, this edit also has you covered. Heck, there's even a Hagrid option for those looking to go all-out.

Whether you're just after fancy dress inspiration or quick wins that you can buy right now, these Harry Potter costumes are bound to make you best dressed at the party.

1

Harry Potter Hermione Granger costume

Harry potter costume
HalloweenCostumes.co.uk

Women's deluxe Hermione Granger costume, £104, Halloween Costumes

BUY NOW

Here's the classic Hermione get-up for folks who wanna say "it's wingardium levi-o-sa, not wingardium levio-sarrr" all night long.

2

Delights Harry Potter Bellatrix LeStrange costume

Harry Potter Bellatrix LeStrange costume
2

Delights Harry Potter Bellatrix LeStrange costume

Credit: Amazon

Ooooo how sexy is this Belatrix get-up?

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3

MagicBox Harry Potter Mad Eye Moody costume

Harry Potter Mad Eye Moody costume
3

MagicBox Harry Potter Mad Eye Moody costume

Credit: Amazon

Ah yes, Mad Eye Moody is perfect for the all-out costume party attendee.

4

Harry Potter Luna Lovegood costume

Harry Potter Luna Lovegood costume
4

Harry Potter Luna Lovegood costume

Credit: Amazon

Chances are you already have a dress like these deep in your wardrobe, all you need is some snazzy shades and a copy of the most recent Quibbler and you're good to go as Luna! 

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5

Rubie´s Harry Potter Dobby costume mask

Harry Potter Dobby costume mask
5

Rubie´s Harry Potter Dobby costume mask

Credit: Amazon

Lol literally put this one with anything and people will still applaud the effort.

6

MagicBox Harry Potter Sybill Trelawney costume

Harry Potter Sybill Trelawney costume
6

MagicBox Harry Potter Sybill Trelawney costume

Credit: Amazon

If the kooky soul of Sybill Trelawney is more your vibe, how about this incred costume? Crystal ball, optional

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7

MagicBox Harry Potter Professor McGonagall costume

Harry Potter Professor McGonagall costume
7

MagicBox Harry Potter Professor McGonagall costume

Credit: Amazon

Anyone who wears this to a party is instantly my favourite person.

8

Factory Entertainment Harry Potter Nimbus 2000 broomstick costume accessory

Harry Potter Nimbus 2000 broomstick costume accessory
8

Factory Entertainment Harry Potter Nimbus 2000 broomstick costume accessory

Credit: Amazon

Add some extra flare to your makeshift Quidditch robes with the help of the Nimbus 2000.

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9

Rubie´s Harry Potter Bellatrix Lestrange Death Eater costume

Harry Potter Bellatrix Lestrange Death Eater costume
9

Rubie´s Harry Potter Bellatrix Lestrange Death Eater costume

Credit: Amazon

Fancy going a little scarier? How about this spooky Belatrix Death Eater costume?

10

Rubie's Harry Potter Gryffindor costume

Harry Potter Gryffindor costume
10

Rubie's Harry Potter Gryffindor costume

Credit: Amazon

Aaaaand here's an option for folks who want a uniform option that feels a little cuter.

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11

Rubie´s Harry Potter Golden Snitch Quidditch costume accessory

Harry Potter Golden Snitch Quidditch costume accessory
11

Rubie´s Harry Potter Golden Snitch Quidditch costume accessory

Credit: Amazon

This is the only bling you need for the night tbh.

12

Harry Potter Fleur Delacour costume

Harry Potter Fleur Delacour costume
12

Harry Potter Fleur Delacour costume

Credit: Amazon

YAS FOR FLEUR DELACOUR. Ugh, this is so damn pretty.

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13

Dahuy Harry Potter Slytherin costume

Harry Potter Slytherin costume
13

Dahuy Harry Potter Slytherin costume

Credit: Amazon

The cape is absolutely fab. The same cannot be said for the amount of 'mind if I Slytherin?' one-liners you might hear on the night.

14

Charades Harry Potter Dumbledore costume

Harry Potter Dumbledore costume
14

Charades Harry Potter Dumbledore costume

Credit: Amazon

Heck yes. This Dumbledore outfit is a close second to McGonagall for 'bossest costume'.

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15

Magic Box Harry Potter Moaning Myrtle costume

Harry Potter Moaning Myrtle costume
15

Magic Box Harry Potter Moaning Myrtle costume

Credit: Amazon

Forget about touching up your smudged eye makeup with the Moaning Myrtle costume. 

16

Rubie´s Harry Potter Voldemort costume

Harry Potter Voldemort costume
16

Rubie´s Harry Potter Voldemort costume

Credit: Amazon

This is perfect if you wanna be 'that guy' and freak the crap out of everyone at the party. 

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17

Harry Potter Hermione Granger Yule dress costume

Harry Potter Hermione Granger Yule dress costume
17

Harry Potter Hermione Granger Yule dress costume

Credit: Amazon

Oooooo pretty!

18

CL COSTUMES Harry Potter Hagrid costume

Harry Potter Hagrid costume
18

CL COSTUMES Harry Potter Hagrid costume

Credit: Amazon

Lolololol I #cant.

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19

Rubie´s Harry Potter Dementor costume

Harry Potter Dementor costume
19

Rubie´s Harry Potter Dementor costume

Credit: Amazon

The best part about this costume? You don't even have to bother with doing your hair or makeup.

20

MagicBox Harry Potter Sorting Hat costume

Harry Potter Sorting Hat costume
20

MagicBox Harry Potter Sorting Hat costume

Credit: Amazon

Wreak havoc all night by putting this one guests' heads and telling them they got Hufflepuff olololol. 

Headshot of Jess Edwards
Jess Edwards
Deputy Editor

Jess Edwards is Cosmopolitan UK’s Deputy Editor, working to deliver the very best experiences across the brand's platforms (print, social, video, digital), products and events, including a focus on our membership offering, Club Cosmo. Jess has worked in the media industry for almost 20 years and at Cosmopolitan for over 10 years, joining the brand as Fashion Editor and later going on to lead the digital team as Site Editor. With her background in lifestyle journalism, it is no surprise that you’re most likely to find her in the Fashion section and exploring the very best in hospitality via our Travel pages.  

Headshot of Natasha Harding

Natasha Harding is the former Fashion Editor (Digital & Print) at Cosmopolitan & Women's Health UK. Working in fashion journalism for just under ten years, she’s covered over 30 international fashion weeks, hundreds of red carpets and religiously scours the runway every season to create the brand’s bi-annual trend report. Joining Cosmopolitan back in Australia, Natasha moved to London a few years ago and is now the resident expert for celebrity style and industry news, fashion features and e-commerce. Follow Natasha on Instagram  

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