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Best women's onesies for warm and cosy lounging

Warm, comfy and fun: onesies are perfect to add to your loungewear stash. Here’s our pick of the best women’s all-in-ones, so you can chill out in style this winter.

By Melanie Macleod | Last updated Dec 5, 2023

Woman wearing a onesie

Love it or loathe it, winter is here, and with it comes cosy evenings in, and mornings snuggled up at home - and what better to wear for those comfy occasions than a soft, fluffy onesie? Not just for leisure time, onesies get a big thumbs up from us when it comes to keeping warm when you’re working from home too (provided you have no video meetings…) Not to mention it's a great gift option for Christmas.

As Money Saving Expert Martin Lewis keeps saying, it’s easier to heat the person than to heat the home, and wrapping up in a onesie when you’re the only one home is more cost-effective than blasting out the heating.

Plus, if you're looking for other cost-effective ways to keep the thermostat low or just to stay cosy this winter, our guides to the best blanket hoodies for kids, best draught excluders, best weighted blankets for kids, and best winter coats for women have got you covered.

Read on for our edit of the best onesies for women for staying cosy (and minimising the electricity bills) this winter.

Best women’s onesies: Editor’s picks

Hush Elle Supersoft Helsey Onesie
Elle Supersoft Helsey Onesie


Buy now
Teddy Fleece Onesie Long Jumpsuit
Teddy Fleece Onesie Long Jumpsuit


Buy now
Teddy Bear Feather Soft Marl Onesie
Teddy Bear Feather Soft Marl Onesie


Buy now

1. Best overall onesie for women: Hush Elle Supersoft Helsey Onesie

Hush Elle Supersoft Helsey Onesie

Price on writing: £69 | Buy now from Hush

Key Specs

Sizes: XXS - XL | Colours: Navy | Materials: 79% Lenzing™ Ecovero™ Viscose, 19% Polyester, 2% Elastane

Reasons to buy

  • Super soft

  • Can be worn on video calls

Reasons to avoid

  • Sizing can be a little large

  • Expensive

What Mumsnet users say

“The Hush one. I have it and love love love it. Super soft and keeps you warm without being bulky,” (Tried and tested by Rocky IV)

Our verdict

Our favourite features? Extra points go to this luxury onesie because if you’re on a video call, it could be mistaken for a chic top, meaning no colleagues need know that you’re cosy in your loungewear.

Proving that onesies can be stylish as well as snuggly, this super-soft jersey onesie is the ultimate in luxury loungewear. The drawstring waist means it looks a little smarter than your average onesie, but is still super comfortable when you fancy a really lazy day.

For any expectant or new mums, fans of this onesie rate it for taking in your hospital bag and wearing in those early newborn days. “It’s really soft and super comfy, easy for breastfeeding and fits well around my bump,” one reviewer wrote. Another new mum wrote: “I bought it as a postpartum treat and it's well worth the money.”

Touching on the price of this, it is the most expensive in our edit, but for a luxury treat that you’ll treasure all winter long, we think it can be justified.

Complete the look (and the cosiness!) with one of the best blanket hoodies for extra warmth this winter.

2. Best warm onesie for women: OHS Teddy Fleece Onesie Long Jumpsuit

Teddy Fleece Onesie Long Jumpsuit

Price on writing: £15.99 | Buy now from Debenhams

Key Specs

Size: S, M, L | Colours: Pink, Grey | Materials: Polyester teddy fleece

Reasons to buy

  • Reasonably priced

  • Ankle cuffs

Reasons to avoid

  • Only two colours

Our verdict

Our favourite features? Perfect for keeping warm at your desk, lounging in of an evening, or even using as nightwear, this is a versatile onesie that will see you right through winter.

Created specifically for taller onesie lovers, this all-in-one outfit also comes in a pretty pale pink hue, and is the thickest in our edit, for when the cold really sets in.

The zip reaches to just below the belly button, so this is easy to step in and out of, plus it has ankle cuffs to ensure you feel extra cosy. It has a snuggly hood too.

Reviewers commented that it is super fluffy, so watch out on first wear, as you’ll likely have fluffy bits around the house.

For more tips on how to stay warm without reaching for the radiator dial this winter, check out our guide to the best heated throw blankets..

3. Best soft women’s onesie: Teddy Bear Feather Soft Marl Onesie

Teddy Bear Feather Soft Marl Onesie

Price on writing: £28 | Buy now from Dunelm

Key Specs

Sizes: S, M, L | Colours: Pink, charcoal, silver| Materials:  30% Recycled Polyester, 70% Virgin Polyester

Reasons to buy

  • Made from recycled bottles

Reasons to avoid

  • Some reviewers say sizing can be off

Our verdict

Our favourite features? Not only is this women’s onesie ridiculously soft, it has cute ears on the hood and full length legs that are just begging to be worn with booty slippers to complete the outfit.

Sure, you’ll look like you’re off to a teddy bear’s picnic in this super-soft onesie, but you’ll also be cosier than you’ve ever been.

It’s made of a slightly shaggy material, for a truly snug look, and has almost exclusively five star reviews on the Dunelm website.

Fans say it’s fantastic to wear on top of pyjamas for an extra cosy layer, plus they praise it for staying just as fluffy when washed. One reviewer even noted it’s so cosy they don’t need to put the heating on - the ultimate praise when energy bills are soaring.

Another commented: “I’m working from home most of the time, so will save the cost within a few weeks in reduced heating costs.”

4. Best novelty onesie for women: Fleece Percy Pig Onesie


Price on writing: £35 | Buy now from M&S

Key Specs

Sizes: XS - XL | Colours: Pink | Materials: Polyester

Reasons to buy

  • Made with recycled polyester

  • Also available in matching child size

Reasons to avoid

  • Probably can't wear on a video call

Our verdict

Our favourite features? Fans praise how soft and cosy it is, with many impressed by the bright colour, too.

If you love M&S’s iconic pink pig as much as we do, this novelty onesie is the one to go for. Sure, you can’t wear it if you have video meetings, but it’s cute and fun, and you’ll smile every time you catch yourself in the mirror.

It has cuffed legs to trap the warmth in, and is roomy, with reviewers saying a small is perfect for a size 12, though they do note that it’s not very long, so maybe not the best onesie if you’re tall.

The hood is good for chilly evenings too, and it’s easy to slip on and off, with a zip that reaches to the hips.

Speaking of chilly evenings, check out our guide to the best hot water bottles for more ways to stay toasty without turning on the heating this winter.

5. Best patterned onesie for women: Hunkemoller Leopard Print Onesie


Price on writing: £32 | Buy now from Simply Be

Key Specs

Sizes: S - 2XL | Colours: Leopard | Materials: Polyester

Reasons to buy

  • Machine washable

  • Stylish

Reasons to avoid

  • Comes up small

Our verdict

Our favourite features? The hood is fleece lined, so you’ll feel super cocooned in warmth, plus it has handy pockets.

Stand out from the crowd in this bold animal-print onesie, complete with cosy hood, cuffed legs and wrists and contrasting drawstrings, for an extra stylish touch.

It has a slouchy fit, so you can wear pyjamas or thermals underneath when the temperature really drops.

Reviewers of Hunkemoller garments note that the sizes come up small, so if you’re keen to layer this, invest in a larger size to be sure it will fit.

For more stylish ways to stay warm both inside and out of the house this winter, check out our guides to the best women's dressing gowns and the best heated gilets.

6. Best animal-themed onesie: Undercover Ladies Soft Fleece Hooded Animal 3D Onesie


Price: £26.99 - £33.99 | Buy now from Amazon

Key Specs

Sizes: S - XL | Colours/styles: too many to list! | Material: Polyester

Reasons to buy

  • Huge variety of animal designs to choose from

  • Can be used as a costume

Reasons to avoid

  • No pockets

Our verdict

Our favourite features? If you want a warm, snuggly onesie which can also double as fancy dress option, look no further!

Available in a huge variety of styles, from cat to corgi to reindeer to elephant, this onesie also features useful cuffed legs and arms and comes in a soft, plush material.

It comes in a range of sizes and has some great reviews, the only downside is that it doesn't have pockets. Still, if you're looking for a cute outfit for lounging in on cold winter evenings or an outfit to wear for a Halloween or New Year's Eve fancy dress party, just pick your animal!

For more ways to stay warm without sending your heating bills through the roof this winter, check out our guide to the best thermal curtains.

8. Best Harry Potter onesie for women: Harry Potter Onesie


Price on writing: From £26.99 | Buy now from Amazon 

Key Specs

Sizes: S - XL | Colours: Black | Materials: Polyester

Reasons to buy

  • Multiple sizes available

  • Good quality

Reasons to avoid

  • Can run a little snug

Our verdict

Our favourite features? This is the perfect onesie for Harry Potter lovers, complete with inner lining in Gryffindor’s iconic colour scheme.

The outside is ultra-soft black fleece, with delicate gold embroidery on the back, reading School of Witchcraft and Wizardry, plus it has a fun witches hat inspired hood, two deep striped pockets and red cuffed sleeves and ankles, for more stylish detailing.

It has 79% five-star reviews on Amazon, proving it’s well-loved by fellow Potter-heads, with fans thrilled by how warm it keeps them working from home, with one going so far as to call it “perfect” for working from home in.

9. Best fleece onesie for women: John Lewis Pom Pom Fleece Onesie


Price on writing: £35 | Buy now from John Lewis

Key Specs

Size: XS - XL | Colours: Pink, grey, blue | Materials: Polyester

Reasons to buy

  • Stylish design

  • Trusted retailer

Reasons to avoid

  • Pricey

Our verdict

Our favourite features? Super soft fleece onesie with a luxurious, fur-trimmed hood

Described as 'the ultimate lounge piece' by John Lewis, this cute fleece onesie features adorable pom poms and a fur-lined hood, making it stylish as well as cosy.

The cuffs and tapered sleeves feature ribbon trims and there's a large, kangeroo pocket for added convenience. It might not be the cheapest onesie available, but reviewers report good quality and a warm, cosy fit.

(And, according to one reviewer, this design was worn by Julia on popular TV series Motherland!)

How to buy the best women’s onesie

Choosing the best women’s onesie is down to personal choice, but there are a few things to consider before investing in your cosiest outfit yet.

Firstly, do you want a hood? Many onesies come with novelty hoods with ears, while others have a simple hood. A hood makes your onesie extra warm and snuggly, though it does look more casual if you’re planning to wear it to keep warm while working from home.

Secondly, think about whether you want to wear pyjamas or thermals underneath your onesie, or just underwear. If you plan to wear clothes underneath it, size up.

The material is crucial when it comes to onesie shopping. Consider if you want an ultra-fluffy onesie that feels like wearing a blanket, or if you’d prefer a more chic onesie that doubles up as loungewear if friends come over. The thicker and fluffier, the warmer you’ll be, so if you’re buying a onesie to keep warm, the fluffier the better!

Look at the sleeves and ankles of your onesie. Many come with elasticated cuffs to keep you warm, but if you think you’ll find that annoying, opt for a looser fit onesie.

Lastly, think about if you want a novelty onesie, that makes you look like a cute character, or if you prefer a more adult onesie.

Are onesies pyjamas or loungewear?

Most people wear onesies as loungewear. They often tend to be too thick to wear to bed and could cause you to overheat in the night, though when it’s the dead of winter, wearing a onesie to sleep is a good alternative to an electric blanket or hot water bottle - especially if you share your bed with a hot sleeper who doesn’t thank you for adding extra warmth with heated devices!

What is the best women’s onesie to buy?

The Hush Elle Supersoft Henley onesie gets our vote. It’s chic, comfortable and stylish enough to wear on video calls, without your colleagues knowing you’re in loungewear. It’s also extremely soft and fans love it for everything from wearing it after giving birth to watching TV with friends.

The Hush onesie is expensive though, so for a more affordable option, Dunelm’s Teddy Bear Feather Soft Marl Onesie is an ultra-snuggly option.

Do you wear anything under a onesie?

That’s up to you! If it’s a thinner onesie, most people tend to just wear underwear underneath, but if you’re planning to wear clothes under your onesie to keep warm at home, remember to size up.

Many onesie fans note that they wear their pyjamas under their onesie when they’re lounging in the evening, so again, size up if this is your desire.

Can adults wear onesies?

Absolutely, there are endless options for onesies for adults, as shown in our edit of the best onesies for women. You can even buy matching onesies for the whole family, be it for Christmas, birthdays or family trips.

How onesies can help cut heating bills

As Martin Lewis said, it’s easier to heat the person than the home, so if you’re home alone during the day, rather than spending money heating the whole house, it’s worth layering up in a onesie to conserve warmth.

Heated gilets are another option for warming just yourself rather than spending money heating the whole house during the day.

Thanks to hybrid working, many of us are spending more time than ever at home, and with bills skyrocketing, any way to save a little money on heating bills gets a big tick in our book!

How we chose our recommendations

Our Swears By edits are compiled by journalists with expertise in the areas they’re writing about. To help ensure we give the best, most accurate and trustworthy recommendations, they follow several steps when choosing products.

Recommendations from real parents

Before we recommend new products, we always ask our trusted Mumsnet users, of which there are more than seven million each month. That’s a lot of honest, impartial advice.

Expert guidance

Our team always ensures our information represents the latest recommendations from experts that you can rely on. They use a variety of sources to compile considered product selections, which includes independent consumer reviews from reputable sources and retailers like Amazon, as well as including products they’ve tried and tested themselves, resulting in a trustworthy, in-depth and honest set of product reviews.

Celebrated best products

Finally, we cross-referenced all of the above information to find the best onesies for women that had won the most accolades and recommendations across the board to bring you a selection of the best ones at various price points. We think there’s something here for everyone.

Why you should trust us

We work hard to provide unbiased, independent advice you can trust. We do sometimes earn revenue through affiliate (click-to-buy) links in our articles. This helps us fund more helpful articles like this one.