The Ultimate Guide to Baby Clothing Sizes

As a new parent, one of the many challenges you'll face is finding the perfect clothing size for your baby. With so many options available, it can be overwhelming to determine what size will fit your little one best. But fear not! In this blog post, we'll guide you through the process of selecting the correct clothing size for your baby, ensuring they are comfortable and stylish from day one.

1. What Are the Standard Sizes in Baby Clothing?

Baby clothing generally comes in 7 main sizes, from premmie to toddler.  Bare in mind this is just a rough guide as babies of the same age can vary in size! But as a general rule, for average sized babies, the following is the standard sizing for baby clothing in Australia:


 Size Age Group Weight Length
00000 Premmie Up to 3kg 50cm
0000 Newborn Up to 4kg 56cm
000 0 - 3M Up to 6kg 62cm
00 3 - 6M Up to 8kg 68cm
0 6 - 12M 8 to 12kg 76-84cm
1 12 - 18M 12 to 14kg 88cm
2 18 - 24M 14+kg 92cm


 2. Consider the Age and Weight

When it comes to baby clothing, age and weight are the two most important factors to consider. Most clothing brands provide size charts that correlate with specific age ranges and weight measurements. Take the time to measure your baby's weight accurately and refer to the size chart provided by the brand to find the perfect fit.

If you are wanting to buy baby clothing as a gift for a newborn, it can be tricky which size to purchase if you haven't seen the baby and don't know it's birth weight. For this reason, it is recommended that you 'buy ahead' and purchase either 0-3M or even 3-6M so that the baby gets maximum wear out of the piece. You can be confident knowing that at some point, the item will fit.

3. Check the Measurements

While age and weight are good starting points, it's essential to remember that every baby is unique. Some babies may be taller or shorter than average, so it's crucial to check the actual measurements of the clothing. Look for size charts that include measurements for the length. This will give you a more accurate idea of how the clothing will fit your baby.

4. Consider the Season

Seasonal variations can affect the size of clothing your baby needs. For example, during the colder months, you may need to choose slightly larger sizes to accommodate layering. On the other hand, during the warmer months, you may opt for lighter and more breathable fabrics that fit your baby snugly. Keep the season in mind when selecting clothing sizes to ensure your baby stays comfortable in any weather.

5. Look for Adjustable Features

Babies grow at an astonishing rate, and their clothing sizes can quickly become outdated. To get the most out of your baby's wardrobe, look for clothing items with adjustable features. Elastic waistbands, adjustable shoulder straps, and snap buttons can help extend the lifespan of the clothing, allowing your baby to wear them for a more extended period.

6. Read Reviews and Recommendations

Before making a purchase, take the time to read reviews and recommendations from other parents. They can provide valuable insights into the quality, sizing and fit of different brands. Look for reviews that mention the accuracy of the size chart and whether the clothing runs small or large. This information can help you make an informed decision and avoid unnecessary returns or exchanges.

7. Don't Forget Comfort

While finding the right size is important, comfort should always be a priority. Opt for soft, breathable, natural fabrics that won't irritate your baby's delicate skin. Avoid clothing with rough seams or tight elastic bands that can cause discomfort. Zippers should include a fabric cover when closed so that babies don't scratch themselves on the metal tongue. Remember, a happy and comfortable baby is a content baby!

By following these tips, you'll be well-equipped to select the correct clothing size for your baby. Remember, every baby is unique, so don't be discouraged if you need to try different sizes or brands before finding the perfect fit. Enjoy the process of dressing your little one and watching them grow! 

What Brands to Buy?

All the features mentioned above can be found in quality baby clothing from popular Australian brands such as Bebe, Wilson & Frenchy, Fox and Finch and more.  Find our full selection of baby clothing and accessories here.

1 Response

Susan McCormack

Susan McCormack

December 03, 2023

Great information thank you! Always find sizing a little difficult especially a newborn size. This post is a great summary of sizing options.

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