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27 Best Adult Onesies That Are Surprisingly Cute (and Even Sexy)

Netflix + chill, anyone?

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a person standing next to a model wearing a pink and blue onesiepinterest
Fabletics/Onepiece

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What do you get when you blend a matching sweatsuit set with cozy pajamas? One of the most *glorious* clothing items to ever exist: the onesie. Technically they’re the go-to sleepwear for babies, but those babies were onto something, IMO—hear us loud and clear when we say that if you haven’t tried an adult onesie, you’re missing out. From sexy cotton rompers to cozy fleece onesies in the perfect holiday plaid, there are some supremely comfortable adult onesies for women out there.

While not all of them are totally flattering, there are some you can even wear on a coffee run and look—dare we say?—chic as hell. Just drape a sweatshirt over your shoulders, sling a belt bag around your waist, and head out the door looking surprisingly put-together. Or, if you’re on the hunt for the perfect I-just-woke-up-like-this ‘fit for Christmas morning or something cute to wear to your annual holiday PJ party, don’t sleep on a festive onesie. There are romper options for hot sleepers and fleece versions that feel like the world’s nicest polar bear is gently cuddling you—there’s even a cheeky option with a cut-out flap right over the booty.

Our top picks for adult onesies for 2023:

  • Red Buffalo Plaid Onesie

    this plaid onesie

    Just Love Red Buffalo Plaid Onesie

    $40 at Amazon
    Read more
  • Adult Christmas Onesie

    this elf onesie

    #Followme Adult Christmas Onesie

    Read more
  • Thermal-Knit Pajama One-Piece

    this thermal onesie

    Old Navy Thermal-Knit Pajama One-Piece

    Read more
  • Button Up Henley Onesie

    this sexy onesie

    Skims Button Up Henley Onesie

    Read more
  • Pet Me Heart Pocket Onesie

    this fleece onesie

    Fabletics Pet Me Heart Pocket Onesie

    Read more

Now, get scrolling and start shopping for the cutest and coziest adult onesies, one-piece pajamas, and jumpsuits for lounging on le internet. Tons of compliments = guaranteed.

this plaid onesie

Just Love Red Buffalo Plaid Onesie

On Sale
Red Buffalo Plaid Onesie
this plaid onesie

Just Love Red Buffalo Plaid Onesie

Now 20% Off
$40 at Amazon

Material: 100% polyester fleece

Size range: XS to XXL

Legit nothing is more festive than a good ol’ buffalo plaid. With its sherpa-lined hood and plush fleece fabric, this snuggly hoodie is ideal for holiday baking and cookie decorating. It comes in a bunch of fun plaid prints, and oh, can we take a moment to appreciate those pom-pom drawstrings??

THE REVIEWS: “Cozy, warm and long enough, too. I’m 5’9” and 125 pounds,” notes one customer. “I like that it’s warm, soft and fuzzy, but lightweight and breathable. 🤗”

this elf onesie

#Followme Adult Christmas Onesie

Adult Christmas Onesie
this elf onesie

#Followme Adult Christmas Onesie

Material: 100% cotton

Size range: XS to XXL

This elf onesie is surprisingly cute thanks to the festive red belt that’ll totally ~snatch~ your waist—Santa’s little helper never looked so stylish. Reviewers say that it runs a little large, so size down if you’re looking for a tighter fit!

THE REVIEWS: “I got this for just something to use around home! It’s so cute,” one customer writes. “I wore it to a Christmas party and got so many laughs and compliments! It’s warm and fuzzy and I never wanted to take it off! Highly recommend, it’s true to size and it’s just comfy!”

this thermal onesie

Old Navy Thermal-Knit Pajama One-Piece

Thermal-Knit Pajama One-Piece
this thermal onesie

Old Navy Thermal-Knit Pajama One-Piece

Now 56% Off

Material: 59% cotton, 39% polyester, 2% spandex

Size range: XS to 4X

The problem with some fleece onesies is that they can leave ya slightly overheated, especially if you wear them to bed. Enter Old Navy’s waffle knit onesie made of a highly-breathable, snuggly soft cotton blend for maximum airflow.

THE REVIEWS: “Perfect for matching Christmas jammies! Super comfortable, fits well,” a shopper writes. “I really liked that the buttons don't come undone easily like a lot of other pajamas of this style do.”

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this sexy onesie

Skims Button Up Henley Onesie

Button Up Henley Onesie
this sexy onesie

Skims Button Up Henley Onesie

Material: 91% modal, 9% spandex

Size range: XXS to 4X

Not that your old cheerleading tees aren’t a lewk, but as SZA once said, “It’s cuffing season…” which means it might be time to stock up on some cute things to wear to bed. Take a page out of Kim K’s book with a second-skin onesie that’s incredibly comfy and next-level soft.

THE REVIEWS: “I LOVE this product. It's so sexy. I have never loved my boobs so much. I mainly wear it around the house,” says one reviewer. “It's sexy and comfortable but I put a tank under it and wore it to work as a bodysuit under jeans. The color is amazing.”

this fleece onesie

Fabletics Pet Me Heart Pocket Onesie

Pet Me Heart Pocket Onesie
this fleece onesie

Fabletics Pet Me Heart Pocket Onesie

Material: 99% polyester, 1% spandex

Size range: XS to 6X

This form-fitting onesie, which comes in 10 (!!) different colorways, is oh-so-soft and flirty thanks to the cute heart-shaped back pockets, teddy fabric, and fit that serves body-ody-ody.

THE REVIEWS: “Y'all! This onesie is the most comfortable thing ever! I was worried that it wouldn't fit my thighs but it stretches so much,” one reviewer notes. “That’s part of what makes it so comfortable!”

this V-Day onesie

Pajamagram Sweetheart Onesie

Sweetheart Onesie
this V-Day onesie

Pajamagram Sweetheart Onesie

Material: 100% polyester

Size range: XS to 2X

It’s never too early to be thinking about the most romantic day of the year! Whether you’re planning on spending the night with Pride and Prejudice (2005) or throwing a Galentine’s pizza night with your besties, this heart onesie will serve you well.

THE REVIEWS: “This is truly the coziest item of clothing I've ever had,” a shopper writes. “It washes well without fading, and I love that you can unzip the footies if you get a little too warm. Highly recommend.”

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this breathable onesie

Old Navy Pointelle Henley Pajama Romper

Pointelle Henley Pajama Romper
this breathable onesie

Old Navy Pointelle Henley Pajama Romper

Material: 57% cotton, 38% polyester, 5% spandex

Size range: XS to 4X

PSA for everyone who hates wearing pants while they sleep—your shirt can’t ride up and your pant legs can’t get bunchy when you’re wearing a sleep romper! These babies are the gift that keeps on giving, promise.

THE REVIEWS: “So cute and comfortable,” one reviewer notes. “Lightweight but still has a cozy feel.”

this size-inclusive onesie

TomboyX Onesie LC - Mixed Plaid

Onesie LC - Mixed Plaid
this size-inclusive onesie

TomboyX Onesie LC - Mixed Plaid

Now 21% Off

Material: 95% OEKO-TEX Certified cotton, 5% spandex

Size range: XS to 6X

Made with OEKO-TEX Certified cotton and available in some adorable novelty prints, this super-soft onesie features a black half-zip closure, contrasting ribbed cuffs, and amazingly deep pockets.

THE REVIEWS: “I gave this onesie to a family member for Christmas. They can NOT stop telling everyone how "RIDICULOUSLY comfortable" it is,” a customer writes. “I bought a different pattern, just because they were so thrilled. They needed another onesie to wear, so we could wash the first one! Ridiculously comfortable.”

this drawstring onesie

Vuori Lux Intentions Jumpsuit

Lux Intentions Jumpsuit
this drawstring onesie

Vuori Lux Intentions Jumpsuit

Material: 90% polyester, 10% elastane

Size range: XXS to XXL

Are most onesies too shapeless for your liking? Then opt for this sleek style with a drawstring that cinches at the waist. As a bonus for sweaty sleepers, this stretch-knit jumpsuit (which comes in black as well) also has anti-odor protection.

THE REVIEWS: “Love this little jumpsuit. It is classy enough for work but feels like I'm wearing pajamas! It's adorable with dress shoes, but I like it even better with some platform gym shoes,” a shopper writes. “It is slightly low cut, but a little cami bra underneath does the trick.”

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this après-ski onesie

Francesca's Christina Button Front Rib-Knit Jumpsuit

Christina Button Front Rib-Knit Jumpsuit
this après-ski onesie

Francesca's Christina Button Front Rib-Knit Jumpsuit

Now 67% Off

Material: N/A

Size range: XS to XL

I’ve officially found the holy grail of adult onesies, aka the kind of onesie that you can wear while running errands and look like you put a decent amount of thought into your outfit. This knit option from Francesca’s has that perfect relaxed-but-tailored fit.

MY REVIEW: “Anyone who has travel plans needs this onesie. You’ll be able to sleep on your flight thanks to the fact that it feels like you’re wearing PJs, but still look cute in case you run into someone from high school at the boarding gate.”

this MicroModal onesie

MeUndies Unisex Onesie

MeUndies Unisex Onesie
this MicroModal onesie

MeUndies Unisex Onesie

Credit: MeUndies

Material: 92% micromodal, 8% elastane

Size range: XS to 4X

Made with ethically-sourced fabric that's breathable, static-resistant, and impossibly cozy, this hoodie onesie is def a winner. Plus, it comes in tons of color and pattern options, including pizza slices, Frenchies, and llamas.

THE REVIEWS: "Every day after work, I can't wait to get into my onesie!" one review reads. "It’s so soft & smooth. It feels great on the skin & keeps me the perfect temperature!"

this street-style onesie

YITTY Major Label Pocket Onesie

YITTY Major Label Pocket Onesie
this street-style onesie

YITTY Major Label Pocket Onesie

Material: 60% cotton, 40% polyester

Size range: XS to 6X

Cool and cozy, this hoodie-inspired onesie from Lizzo's shapewear brand YITTY features tonal contrasting side panels and a loose-fit silhouette for ~street-style vibes~ and you can get it in three bold color options.

THE REVIEWS: "I love the warmth and comfort of my onesie," says one tester. "The colors are vibrant, and I love the cute details, like the metal Y zipper pull. This was my first Yitty purchase, but it won't be my last."

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this bouclé onesie

Skims Cozy Knit Unisex Onesie

Skims Cozy Knit Unisex Onesie
this bouclé onesie

Skims Cozy Knit Unisex Onesie

Credit: Skims

Material: 76% polyester, 24% nylon

Size range: XXS to 5X

Relaxation, here you come. This soft bouclé onesie has an oversized fit so you can chill with ease, plus kangaroo pockets (perfect for, say, a candy stash for handy couch snacking) and a hood. Plus, in typical Skims fashion, it comes in the prettiest muted and neutral hues.

THE REVIEWS: "I never want to take this off!" one person writes. "I can sleep in it and not get too hot, yet during the day, it’s so cozy and gives perfect warmth. This is worth every penny!"

this velvet onesie

Onepiece Original Velvet Jumpsuit

Onepiece Original Velvet Jumpsuit
this velvet onesie

Onepiece Original Velvet Jumpsuit

Now 40% Off
Credit: Onepiece

Material: 95% polyester, 5% elastane

Size range: XXS to 2X

Velvety soft and complete with pockets and a hood, all this onesie is missing is a bottle of wine and a Netflix subscription for the perfect night in—plus, it comes in a bunch of different colors.

THE REVIEWS: "After my workday ends, the first thing I do is slip into this gorgeous design," one tester writes. "Soft & luxurious & sexy, it’s the perfect end to my day."

this slim-fit onesie

Onepiece Original Onesie 2.0

Onepiece Original Onesie 2.0
this slim-fit onesie

Onepiece Original Onesie 2.0

Material: 80% cotton, 20% polyester

Size range: XXS to 2X

Made from a premium cotton and elastane blend, this amazingly flattering onesie comes in basically every color imaginable, and you could 100 percent wear it to brunch without feeling like you're rocking your jammies.

THE REVIEWS: "The most comfortable piece of clothing I own while still looking good!" one customer raves. "I absolutely live in it and it’s great for working from home!"

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this playful onesie

Tipsy Elves Beary Christmas Jumpsuit

Tipsy Elves Beary Christmas Jumpsuit
this playful onesie

Tipsy Elves Beary Christmas Jumpsuit

Now 11% Off
Credit: Tipsy Elves

Material: 100% polyester fleece

Size range: XS to 3X

Once you put on this festive, fleece-lined jumpsuit (complete with adorbs polar bear ears on the hood), you’ll never wanna take it off—and yes, it's a must-have for Christmas morning.

THE REVIEWS: "I was on the fence about this because what adult really needs a onesie? Um, turns out, I do," one buyer says. "This is super warm and cute and cozy and I LOVE it (especially all the pockets and the little ears on the hood)."

this fluffy onesie

Onepiece The Puppy Jumpsuit

Onepiece The Puppy Jumpsuit
this fluffy onesie

Onepiece The Puppy Jumpsuit

Now 40% Off

Material: 100% polyester fleece

Size range: XXS to 2X

This onesie is basically the equivalent of cuddling a fluffy puppy, and you 100 percent need it in your life. It comes in over a dozen color options and features a handy kangaroo pocket, as well as the softest fleece fabric you've ever felt.

THE REVIEWS: "Wow. I was not expecting how soft this is!" writes one person. "It’s the same fuzz on the inside [and] it’s softer than my softest fleece blanket. I’m never going to take this off when it’s cold."

this henley onesie

Skims Logo Pointelle Henley Onesie

Skims Logo Pointelle Henley Onesie
this henley onesie

Skims Logo Pointelle Henley Onesie

Now 69% Off
Credit: Skims

Material: 96% cotton, 4% spandex

Size range: XXS to 4X

Ideal for layering or wearing on its own, this classic full-length onesie (which comes in four fun colors) has got a high crew neckline with a henley button closure, banded cuffs on the sleeve, and luxe cotton pointelle fabric.

THE REVIEWS: "This onesie makes me look and feel fantastic," one reviewer says. "The fit is so stretchy and comfortable and very flattering. I thought it was a bit pricey but it is worth every cent. Can’t recommend this onesie enough!!"

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Forever Lazy Footed Adult Onesies

Forever Lazy Footed Adult Onesies

Forever Lazy Footed Adult Onesies

this lightweight onesie

Sweaty Betty Gary Long Sleeve Jumpsuit

Gary Long Sleeve Jumpsuit
this lightweight onesie

Sweaty Betty Gary Long Sleeve Jumpsuit

Now 50% Off

Material: 86.2% polyester, 13.8% elastane

Size range: XXS to 2X

Another great lounge-y jumpsuit option is this stretchy, sweat-wicking onesie, which cinches at the hip and is cropped at the ankle. Get it in black or blue and get ready to bask in its lightweight comfort.

THE REVIEWS: "This jumpsuit is perfect for wearing around the house, [and the] long sleeves keep you nice and warm," one review reads. "The fabric is soft against your skin and you could easily wear it for your yoga sessions."

Headshot of Hannah Oh
Hannah Oh
Assistant Shopping Editor

Hannah is the assistant shopping editor at Cosmopolitan, covering all things from cute apartment decor to trendy fashion finds, TikTok products that are actually worth your $$$, and the perfect gift to buy for your boyfriend's mom. She previously wrote for Seventeen and CR Fashion Book. Follow her on Instagram for hot takes on red carpet fashion and unhinged updates on the books she’s reading on the train. 

Headshot of Brooke Shunatona

Brooke Shunatona is a contributing writer for Cosmopolitan.com.

Headshot of Corinne Sullivan

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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