When Do Babies Stop Wearing Onesies
Baby Parenting

When Do Babies Stop Wearing Onesies?

Looking for answers on when do babies stop wearing onesies and start planning yourself indignance?

Onesies are a full-body suit-like type of clothing for babies.

They have two openings at the bottom for the baby’s legs and, in most cases, a set of buttons at the bottom. 

It’s like a cute form of jumpsuits for babies. They are famous for babies because of their extreme comfort and warmth.

However, your little one will not be wearing onesies forever. So, when do babies outgrow onesies? 

When Do Babies Stop Wearing Onesies? 

We can’t deny that onesies look cute on babies. They are also comfortable, stretchy, and safe because they don’t cover the baby’s head during sleep.

But, unfortunately, you can’t dress your baby in onesies forever. 

Well, onesies come in two sizes are 2 and 3. Unfortunately, once your baby outgrows size 3, there isn’t a size 4 onesies in the market that you can turn to. 

As to when exactly a baby will stop wearing onesies, it’s a personal choice, depending on your baby’s growth rate. 

Averagely, most babies will stop wearing onesies at some point between 12 months to 24 months.

However, other factors can make babies stop wearing onesies at any time, including:   

1. Nappies

Most bodysuits have a design that snaps underneath, which is important in containing leaks when using disposables. However, for cloth nappies, it’s a bit different. 

Bodysuits, especially those that are close-fitting, can cause compression leaks by pressing in on the nappy.

When the baby is using cloth nappies, you should consider using usual clothes instead of onesies. 

2. Potty Training

It is effortless to pull down shorts together with the nappies or undies during toilet training compared to struggling with undies before sitting on the potty. 

During potty training, most parents prefer dressing their young ones in shorts and t-shirts because it helps reduce stress when undressing and makes the training easy for the baby. 

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3.Walking Stage

Some parents may stop dressing their babies in onesies when they learn how to walk on their own.

The age of independent walking differs from one baby to another.

It can happen as early as 8 months or as late as 18 months, but most babies will be walking from 12 to 14 months of age on an average scale. 

When the baby starts walking, they may become a little stressed and less compliant when changing nappies and getting dressed.

For a playful child, it’s a bit difficult to get them to put on onesies compared to how it can be easy for them to be dressed in skirts or shorts before they slip out of your arms. 

4. Age

Not every parent wants to have their baby’s belly exposed.

Onesies do a much better job at covering your baby than any piece of clothing, especially when you are outdoors.

But when your baby starts growing, you might not have any other choice than to leave onesies behind.

For example, your baby might be taller than their age requirement, meaning the onesie will not fit them comfortably. 

5. Temperature

One of the best reasons parents prefer using onesies is because they keep the baby.

That means they might be your go-to piece of clothing during the cold weather.

But, when it is summer, or the weather starts getting warmer, many parents prefer putting onesies aside.

The intense heat will make the onesie pretty hot and uncomfortable for the baby. 

6. Toddlers’ Opinion

Believe it or not, there is a time when babies start having opinions about what they like.

They might not be able to speak it out loud, by their behavior is an excellent mode of communication.

If your baby becomes fussy when dressed in onesies, there is a possibility that they do not like it. 

7. Convenience

One of the reasons why parents like to use zippered onesies is because they are more convenient to use than regular onesies. 

All you need to do is to lay your child on top of the piece of clothing and tuck him into it. 

This piece of clothing is also ideal for a baby who frequently spews on himself. You won’t need to remove soiled clothing over his head. 

If these are the reasons why you enjoy zippered onesies, you may want to keep using them until your baby starts to sit or crawl. 

There are some parents who decide to stop using onesies once their babies start crawling. Even though they provide some protection on their knees, the fabric can still get worn out easily. And in no time, your baby’s onesies will have lots of holes in them. 

Another frustration you may have with onesies is that you’ll have trouble getting the snaps correctly once your baby starts moving. 

As your baby gets older, things will only get messier; especially when he starts to eat or play outdoors. 

If your baby gets mud on his crotch area, you’d have to remove the whole onesie. But if you’re letting him wear regular clothes, you can just replace the soiled piece and change it. 

8. Baby Belly 

Another reason why you may want to hold onto onesies is so you can avoid your baby’s belly hanging out. This can happen when his shirt rides up. 

If you’re not keen on the idea of having your baby’s belly exposed to the public, you may want to keep using onesies. 

Or you can look for longer t-shirts so you can keep his belly tucked into his shorts or pants.


Nowadays, there are so many different types of clothes available for babies. You don’t need to keep letting your baby wear onesies every day. 

You can buy jeggings, overalls, and dresses. Or if you have a little boy, you can let him wear some really cool shorts paired with a cute slogan shirt. 

But if you wish to enjoy the moment while your child is still a baby, you can let him keep wearing onesies until they no longer fit him.


Yes, your baby might look all cute and comfy in your vast collection of onesies.

However, what many parents do not know is when do babies stop wearing onesies.

Well, once your baby has outgrown onesies or is no longer comfortable in them, maybe it is time to pack them. 

Frequently Asked Questions (FAQs)

1. Should a baby always wear a onesie?

It actually depends on the parents. 

But a onesie is a good way to keep your baby comfortable while they sleep. Make sure to swaddle them with a light blanket so they do not get hot while they sleep. 

On a hot day, you can let your baby wear a pair of shorts or pants so they do not get warm from the sun. 

2. What do 1-year-olds wear?

One-year-olds can wear anything they want or what their parents want as long as they are comfortable in it.

If you are shopping for a one-year-old, make sure you choose a size that is ahead of your baby’s actual age. This is because babies grow quickly. And there are some clothes that are small-sized in reality. 

You can look for clothes that are size 2 for your one-year-old. 

3. Should babies wear footie pajamas?

In cooler weather, you can let your baby wear footie pajamas. This will help regulate your little one’s body temperature. 

Footie pajamas will cover your baby’s arms, legs, and feet. For his age, it is the perfect choice since they come with convenient snaps and zippers. 

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Iesha Mulla

Iesha is a loving mother of 2 beautiful children. She's an active parent who enjoys indoor and outdoor adventures with her family. Her mission is to share practical and realistic parenting advice to help the parenting community becoming stronger.

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