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. 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

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

How we chose our recommendations

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

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. 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.” 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. 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.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. 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.

Sizes: S, M, L | Colours: Pink, charcoal, silver| Materials: 30% Recycled Polyester, 70% Virgin Polyester Reasons to buy Heated gilets are another option for warming just yourself rather than spending money heating the whole house during the day.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? 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. 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.

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

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.