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December 7, 2025

Understanding Kids' Clothing Sizes: A Parent's Guide

By Lisa Wang
sizingguideparenting

Understanding Kids' Clothing Sizes: A Parent's Guide

Kids' clothing sizes can be confusing, with different brands using different measurements. Here's how to navigate it:

Size Charts Vary by Brand

Don't assume a size 4T in one brand equals a size 4T in another. Always check:

  • The brand's specific size chart
  • Your child's current measurements
  • Reviews from other parents

Age vs. Size

Sizes like "2T" or "4T" are based on age, but kids grow at different rates:

  • T sizes (2T, 3T, 4T): Typically for toddlers
  • Regular sizes (4, 5, 6): For older kids
  • Plus sizes: For larger children

Tips for Buying on TrunkMatch

  1. Ask for measurements: Sellers can provide chest, waist, and length measurements
  2. Check the brand: Research the brand's sizing if you're unfamiliar
  3. Buy slightly larger: Kids grow fast, so buying up a size extends wear time
  4. Read descriptions: Sellers often note if items run large or small

Common Size Conversions

  • 2T ≈ Size 2
  • 3T ≈ Size 3
  • 4T ≈ Size 4
  • After 4T, sizes typically go 5, 6, 7, 8, etc.

When in doubt, measure your child and compare to the item's measurements!