2T vs. 24 Month Size Clothes: What’s the Difference?


24-month vs. 2t size baby clothes

Confused about the difference between 2T vs. 24 month sizes for your baby? You’re not alone.

One would think that these sizes would be equivalent since 24 months equals to 2 years old in a literal sense. Unfortunately, it’s not that easy. 2T is definitely a distinct size from 24m.

Until I had a baby, I had no idea how confusing baby and toddler clothing sizes would be. I started writing guides to these weird overlapping sizes when I personally encountered this problem trying to shop for my own kid.

(If you’re planning ahead, you can find my other sizing guides here: 4T vs. 4 sizes and 5T vs. 5 vs. XS sizes and 6X vs. 6T vs. 6 sizes.)

Below you’ll find a breakdown of 24M vs. 2T sizes, including details about their differences. To save you time, I also include the size charts for a number of popular clothing stores since sizing differences vary some across retailers.

What is 24 month size?

24-month size is the last of the baby sizes offered by most brands. It generally fits babies approaching 2-years old. 24-month size clothes roughly fit babies who weigh between 28-30 lbs and are 32-34″ tall, though the exact measurement ranges vary a bit by store.

Baby clothes in general are designed to accommodate babies in diapers with a wide range of mobility skills. This means the clothes have extra space to fit the bulkiness of diapers and are also easier to take on and off for diaper changes.

You’ll find more stretchy bottoms, elastic waistbands, and footed pajamas in baby clothes. 24-month is also the last size for onesies and neck holes that allow you take off tops up or down the body.

What is 2T size?

2T is the first toddler size available at most retailers. The size is designed to fit the average two-year old. 2T clothing approximately fit toddlers who weigh between 29-31 lbs and are 35-36.5″ tall, give or take a little depending on store sizing variations.

Toddler sized clothes are generally designed for little ones who have started walking, and sometimes for babies who are out of diapers. Toddler clothes become longer and leaner as babies thin out into little kids. You’re more likely to find footless pajamas and clothes that look more like kids clothes in toddler sizes.

What are the differences between 24 month vs. 2T clothing?

There are a few key differences between 24-month vs. 2T clothing. First, at many stores 24m clothes are smaller than 2T clothes. They have smaller measurement ranges for weight and height and can be thought of as the size before 2T.

Second, 24 month is considered a baby size vs. 2T which is a toddler size. As Carter’s explains in their fit guide, 24-month clothes “might” be fashioned to accommodate diapering while 2T “may” be for potty trained toddlers. However, the tentative “might” and “may” quoted from the guide highlight how this is not a hard and fast rule for all clothing.

2T vs. 24m size tags on clothing

The baby vs. toddler distinction also means you’ll find a different selection of clothing in 24-month and 2T sizes. 24-month size is usually the last size in which you’ll find onesies. You’ll also find more footed pajamas in 24-month size vs. 2T when footless offerings become more prevalent.

Further, baby sizes like 24-month clothes highlight that the clothing will be easier to take on and off. This is helpful for both diaper changes and for wrangling clothes on wiggly babies. 24-months is usually the last time you’ll see of neck holes that allow you to take a top off over the head or down the body. By size 2T, tops become regular shirts with standard neck holes.

The differences between 24m vs. 2T sizes will also vary some by store. For example, at Carter’s there is an overlap in the size measurements on their size chart. On the other hand, some stores like Old Navy do not have any overlap between their 24-month and 2T sizes. In these situations, the 24m size comes first and then 2T is the next size up.

[Note that this difference around diapering between 24-month and 2T is the flip of what we see in 4T vs. 4 sizes and 5T vs. 5 sizes. When you’re comparing toddler sizes to big kid sizes, the toddler size indicates clothes for a child who is still learning to dress themselves and possibly still in diapers.]

24 month vs. 2T at Carter’s

Carter’s is one of the biggest retailers for baby & toddlers clothes. In recent years, they were estimated to have cornered a quarter of all baby clothing sales in the U.S (source).

There is an overlap in the weight measurement ranges for 24m and 2T at Carter’s. Interestingly, there’s a gap between the height ranges with 24M ending at 34 inches but 2T not starting until 35 inches.

24M32 – 34″28 – 30 lbs
2T35 – 36.5″29 – 31 lbs

Carter’s recognizes the confusion in sizes and actually has a webpage about finding the right size in their clothes. As explained above, their guide specifies that their 24m size “might [emphasis mine] be designed to accommodate a child’s diaper” vs. their 2T which “may” be for toddlers out of diapers.

Old Navy & Gap’s 24m and 2t sizes

Old Navy and Gap are other popular retailers for baby and toddler clothes. Old Navy and Gap use range sizes for their baby clothes so their 24-month size is labeled 18m-24m.

As shown by the size chart below, 24-month and 2T are distinct sizes at Old Navy. 24m is the smaller size and once your baby outgrows it, then they size up into 2T.

18M-24M31.5 – 33.75″24 – 26 lbs
2T33.75 – 36″26 – 28 lbs

Target Cat & Jack’s 24 month vs. 2T clothes

Cat & Jack’s is Target’s house brand for baby, toddler and children’s clothing. I personally have really liked our Cat & Jack clothing, it has been durable and has a nice aesthetic.

The 24-month and 2T size measurement ranges in Cat and Jack completely overlap. However, it should be noted that not all items in the Cat & Jack line are available in 24-month size. 24-month size is only available for items in their baby section. Their toddler line sizes go 12m, 18m, and then jump to 2T.

24M33 – 35.5″26.5 – 28 lbs
2T33 – 35.5″26.5 – 28 lbs

If you’re looking at an item at Target where without a 24-month option, 2T is the appropriate size to buy.

Children’s Place 24M & 2T baby clothes

Children’s Place sells their name brand and Gymboree brand clothes. They are known for being a low-cost retailer for children’s clothing. The Children’s Place hand-me-downs we’ve received have been surprisingly soft.

Like Old Navy, Children’s Place 24-month and 2T sizes are discrete. There is no overlap in the height or weight measurement ranges. Your baby would first wear 24m and then grow into the 2T size at Children’s Place.

24M32 – 33.5″28 – 30 lbs
2T33.5 – 35″30 – 32 lbs

I also wanted to note that Children’s Place was one of the manufacturers involved in a deadly factory building collapse in Dhaka in 2013. Their website details their responsible sourcing policies but I was not able to find any specific practice changes since the tragedy.

Conclusion: Are 24 month & 2T clothes the same?

At most stores, 24-month and 2T sizes are different sizes. 2T usually fits kids with bigger height and weight measurements than 24-month. 24-month size is also more likely to accommodates diapers and easy dressing, whereas 2T tends to be cut longer and leaner. Since 24m is a baby size and 2t is a toddle size, there are also differences in what clothing types are available in each size, such as onesies only being offered in 24-month size.

That said, your baby is likely to fit fine in both 24-month and 2T sizes around the same time. They’re designed for similarly aged kid at most stores. For tall and thin kids, size 2T may work slightly better; smaller babies in diapers may prefer 24-month sizing.

It is important to remember that sizes are just a number and that clothing fit will vary by brand. As your baby grows, their age and size will likely not match up perfectly and they probably will wear a mix of sizes.

For example, our baby is currently wearing clothes ranging from 6-month size (pants) all the way up to 18-month size (footed pajamas). Very likely, your kid will have some 24m clothes and 2T clothes in their wardrobe at the same time.

Finally, you may get longer wear out of size 2T since it is longer & bigger at most stores. When in doubt, it is always a good idea size up when buying kids clothes. They grow so fast so you’ll get more of your money’s worth when they get more wear time out of each piece.

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