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finding the perfect fit: kids’ size guide and other things to think about

Buying children’s clothes can be a daunting task. Whether you are a first-time parent or a family member who hasn’t had to buy kids’ clothes recently, it can be intimidating to figure out sizes for the special child in your life. Even if you are an experienced kid’s clothes buyer, it can still be difficult to pinpoint sizes for kids in transition or from one size to another. If you are worried about buying the right size or want confirmation that you are not the only one in this boat, check out the following information for some reassurance.


There are a few things to consider about sizes, but you can’t do that until you know the universal size guidelines.


Preemie – under 4 lbs, up to 16 in.

Newborn – 4–8 lbs, 17-21 in.

3 Months – 9-11 lbs, 22-24 in.

6 Months – 12-14 lbs, 25-27 in.

9 Months -15-18 lbs, 28-29 in.

12 Months – 19-21 lbs, 30-31 in.

18 Months -21-23 lbs, 32-33 in.

24 Months – 24-28 lbs, 33-34 in.


2T – 24-28 lbs, 34-36 in.

3T – 29-32 lbs, 37-39 in.

4T – 33-36 lbs, 40-42 in.


Small Kids 5 – 6X

Big Kids to Preteen 7–16

In some cases kids big kids sizes are measured in XS to L; if that is the case, here are the comparisons:

XS – Size 3 -4

S – Size 5 – 6

M – Size 6 – 8

L – Size 10 – 12

XL – Size 14 – 16


These are standard sizes for babies and kids, but that doesn’t mean that they are an exact match for the kid in your life. There are a lot of things to consider before you choose the perfect size. The most significant thing to think about is that while these clothing sizes have ages in their names, kids don’t always match up with the average size for their age. Make sure to buy according to the weight and length requirements as opposed to the age range.

Just like with adult clothing and shoes, sizes can vary depending on the brand. It doesn’t hurt to do some research to see if a certain brand runs big or small to adjust your size accordingly.


In some cases, the style of clothing may influence the size that you want to buy. For instance, you may want to buy a size larger or smaller for a summer dress for a toddler girl, depending on how long you want it. The same goes for shorts which may have a similar waist size but vary in length, especially in toddler sizes. Always check for the fit before you buy, as sizes can also change drastically depending on style. A “slim fit” or “skinny” pant may say that it is a certain size but will be entirely too small or uncomfortable for kids who are usually that size.

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One of the biggest fears about buying children’s clothes is that they can grow so fast, but the thing is that they can also stop growing for long periods. While kid’s growth patterns are unpredictable, it should not be a reason not to buy clothes because they may end up in a certain size for a few months, even toward a year. If you are concerned that they may be hitting a growth spurt, there is nothing wrong with buying the next size up. Even if they hit a growth pause, they will eventually fit into those adorable clothes you picked out.

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Now that you know how to size the kid in your life, it is time to get them into some cute clothes. Don’t forget to think about the next size up and matching sizes to your preferred fit. With so many fantastic options at, you are sure to find something that you and the kids absolutely love.


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