1Helly R. from Severance
AppleHelly R. loves a blue outfit. All you need for this costume is a blue turtleneck, pencil skirt, heels, and a Lumon lanyard to look like a star employee for Mr. Milchick.
SHOP THE LANYARD
2Thumbelina
Warner Bros.Throwback, right? Who else was obsessed with this tiny fairy who sleeps inside a walnut shell? Her long red locks are in a high pony, she wears a pretty color-block dress, and she eventually gains her wings at the end of the animated flick. (Spoiler alert, sorry!)
SHOP THE WINGS
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3Joan Holloway from Mad Men
AMCChristina Hendricks was the original office siren in Mad Men. Her tresses were almost always pinned up and her signature pen necklace gave her an air of authority as office manager who later became a partner of the firm. I would listen to anything she says, honestly.
SHOP THE DROP NECKLACE
4Patricia "Patti" St. George in The Buccaneers
Angus Pigott//AppleChristina Hendricks back at it! If you want a more historical vibe for your costume, you could don your best corset, frilly blouse, and ringlets to channel this matriarch in the Apple TV+ show.
SHOP THE RUFFLE BLOUSE
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5Joan of Arc
Noam Galai//Getty ImagesOkay, so historical accounts say that Joan had dark hair, but you can take some artistic liberties because Zendaya showed up as the saint at the Met Gala with a short red bob. Cue the jaw drops. You can do the same this Halloween by getting creative with a chainmail dress like the below.
SHOP THE CHAINMAIL DRESS
6Miranda from Sex and the City
getty images//Getty ImagesWhether you're a SATC ride or die or mourning the ending of And Just Like That..., it's a great time of the year to dress up like Miranda. She usually incorporates minimal and corporate chic elements in her outfits, and this halterneck top and shoulder-dusting earrings are no exception. Pair with lawyerly trousers to finish the look!
SHOP THE DROP EARRINGS
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7Daphne from Scooby Doo
Warner Bros.Go solo in an all-purple 'fit and a sleek blowout, or get your friends to play Velma, Shaggy, Fred, and Scooby so you have the whole gang in on the fun.
SHOP THE DRESS
8A Midwest Princess
Courtesy of Amusement RecordsChappell Roan is the pop girly of the year, no doubt. Dressing up as her prom queen persona on her breakout album cover will ensure you're looking H-O-T T-O G-O this Halloween.
SHOP CHAPPELL'S SASH
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9Poison Ivy
DC ComicsLive out your villain dreams in a green and leafy getup. All you'll need is a green bustier, some green gloves, a dart holder, and a mean smize.
SHOP THE GREEN BUSTIER
10Mia from La La Land
Courtesy of Summit EntertainmentPractice your roadside choreography and throw on a bright yellow A-line dress to look like you just came out of this Damien Chazelle flick.
SHOP THE YELLOW DRESS
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11Ginger Spice
JMEnternationalA Union Jack dress and platform boots will perfectly complement your flaming locks when you're dressed as Ginger Spice of Spice Girls fame. Don't forget to tease out your 'do!
SHOP DRESS
12Satine from Moulin Rouge
20th Century StudiosShe's a muse! Copy Nicole Kidman's wavy tresses and red dress for a Moulin Rouge-inspired Halloween costume, and top it off with red lipstick.
SHOP THE RED DRESS
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13Ginny Weasley from Harry Potter
Warner Bros.Wands at the ready. A grey cardigan, Gryffindor tie, and a side part will definitely channel the youngest Weasley sibling in this iconic series.
SHOP THE GRYFFINDOR TIE
14Lola from Confessions of a Teenage Drama Queen
Walt Disney Studios Motion Pictures🎶That girl was a one time teenage drama queen...🎶 Channel your inner Lola and get ready to be a DIY queen to achieve this iconic look from the movie.
SHOP THE PINK TANK
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15Penelope Featherington from Bridgerton
NetflixPastels, hair accessories, and empire waist dresses will channel the regency era from this hit Netflix show. We're swooning over this look from our fave redhead heroine, Penelope.
SHOP THE GREEN DRESS
16Lily Bloom from It Ends with Us
Jose Perez/Bauer-Griffin//Getty ImagesLily Bloom's style in this controversial Colleen Hoover adaptation is interesting, to say the least. And that's exactly what makes it such a good costume idea!! Grab a bunch of denim pieces you already own, and pair with bright red boots.
SHOP THE RED BOOTS
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17THE Mad Hatter from Alice in Wonderland
DisneyFab makeup skills help pull this off, but even if you're not that great (*raises hand*), put on your most eclectic outfit—accessorizing with a teacup, of course—and a giant top hat, and people will get the gist.
SHOP THE TOP HAT
18Jessica Rabbit from Who Framed Roger Rabbit?
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19Winifred Sanderson from Hocus Pocus
DisneyThis Sanderson sister arguably has the most iconic look of the movie thanks to her bright red hair, her vivid green cape, and itsy-bitsy lipstick.
SHOP THE DRESS
20Leeloo from The Fifth Element
© 2006 Columbia Pictures Industries, IncCalling all sci-fi geeks: This truly iconic costume is sure to make you stand out at your Halloween party. Wear over a nude bodysuit if you'd prefer a little more coverage!
SHOP THE STRAPPY COSTUME

I'm Cosmopolitan's Associate Fashion Editor and write about any and all trends, major celeb fashion moments, and why wide-leg jeans are basically the best. I originally moved to New York City to audition for RENT, only to find out that the play closed 10 years ago.

Corinne Sullivan is an Editor at Cosmopolitan, where she covers a variety of beats, including lifestyle, entertainment, relationships, shopping, and more. She can tell you everything you need to know about the love lives of A-listers, the coziest bedsheets, and the sex toys actually worth your $$$. She is also the author of the 2018 novel Indecent. Follow her on Instagram for cute pics of her pup and bébé.
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