Will This Fit My Kid? Kids’ Clothing Sizes Decoded - Bounce Mkt

Will This Fit My Kid? Kids’ Clothing Sizes Decoded

Children's clothing sizes can feel like a total puzzle—especially when you're shopping across different brands that each seem to size things their own way. Don’t worry—we’re here to help decode the mystery so you can shop with confidence.

Why Sizing Varies

First things first: not all kids are built the same—and neither are clothing brands. One brand’s 4T might fit like another brand’s 3T. Some labels run small, some run large, and some are pretty true to size (whatever that means).

It gets trickier because brands also use different language to communicate sizing. You might see labels like “2”, “2T”, “24 Months”, or “2–3 Years”—all technically for a kid around age 2.

And let’s be honest: when shopping secondhand, it gets even more confusing. Clothes may have shrunk in the wash since, as we all know, your children’s clothing certainly needs a good wash from time to time!

 

Overview of Children’s Clothing Sizes

Here’s a quick rundown on the different sizes:

  • Months-Based Sizing: Baby clothing is often sized based on age, such as 0-3 months/3-6 months or 12 months/18 months. European brands also tend to use months for sizing into toddlerhood. Just keep in mind that every child grows differently, so age-based sizing doesn’t always match your kid’s actual size.
  • T Sizes (2T, 3T, 4T, 5T): The “T” stands for toddler. Some brands use the “T,” while others might just list the number (like 2 vs. 2T). In general, “T” sizes may allow more room for diapers, but honestly, it varies by brand.
  • XS-XL / 4–16: Once your child moves out of toddler sizes, you’ll see more variety. For many brands, big kid sizes usually go by number and/or letter (S, M, L), and they’re based more on height and weight.

  • Height in Centimeters: Many European brands size clothing by height in centimeters—like 98 cm or 110 cm. This system is based on your child’s full height and can offer a more precise fit, especially for slim or tall kids.

 

Tips for Shopping Secondhand 

Navigating sizes at a secondhand store can be tricky, but these tips make it easier:

  • Compare to Current Favorites: One of our customers taught us this clever trick; bring in a shirt, pants, or dress that fits your child well and use it as a size guide when browsing secondhand racks.
  • Size Up: Kids grow fast. If you’re unsure, go up a size. You can always roll sleeves or cuffs, and many clothes shrink slightly after washing anyway.
  • Check Brand Size Charts: Most brands have sizing charts online. A quick search can help, and bookmarking your go-to brands saves time later.
  • Check The Return Policy: Let’s face it, even with the best of intentions, you’re bound to get sizes wrong on occasion. That’s why Bounce Mkt has a two-week return window for all full priced items.

 

In Conclusion

Shopping secondhand for your kids is smart, sustainable, and honestly kind of fun—especially once you get the hang of sizing. With a little practice and a few tips up your sleeve, you'll be a secondhand sizing pro in no time.