Newborn and 0-3 month sizes are not the same. The main difference between newborn and 0-3 months sizes is the weight and length of the baby. Newborn sizes are designed for babies weighing up to 8 pounds and 21.5 inches long.
0-3 months sizes are designed for babies who weigh between 8 and 12 pounds and are between 21.5 and 24 inches long.
It’s important to note that these size ranges are just guidelines and may vary depending on the brand and style of the clothing.
Newborn (NB) Size Baby Clothes
Newborn (NB) size baby clothes are designed for babies who are just born and are meant to fit cozily on newborn’s body. NB size clothes are smaller than 0-3 month size and are designed for babies weighing around 8lbs.
Newborn-size clothes are usually labeled as “NB” on the tag or packaging. They are made with soft and breathable fabrics and are designed to be comfortable for a newborn’s delicate skin. Common types of NB-size baby clothes include onesies, sleepers, hats, and mittens.
When shopping for NB-size baby clothes, it’s important to remember that babies grow quickly, so you may only need NB-size clothes for a short period.
How Long Do Babies Wear Newborn Size Clothes?
The duration for which a baby will wear newborn-size clothes is determined by their birth weight and how rapidly they gain weight in the first few weeks.
Generally, newborn-size clothes are only worn for a short period, usually a few weeks. This may vary depending on individual growth rates, with some babies outgrowing newborn size in just a few days while others may wear them for up to two months.
How Many Newborn Clothes Do You Need?
Newborn size clothes look cute, but you only need only few because babies grow very fast, and they will outgrow them before you know it. A maximum of five outfits are enough, but again, it will depend on how often you will be doing your laundry.
However, a general guideline is to have around 5-7 onesies or bodysuits, 5-7 sleepers or pajamas, and 2-4 outfits for going out. You can also have a few pairs of socks, hats, and mittens
0-3 Months Clothing Size
0-3 month size clothing is larger than newborns and is designed to accommodate a baby’s growing body. These clothes are labeled as “0-3M” or “3M” on the tag or packaging and are available in various styles and fabrics.
Common types of 0-3 month size baby clothes include onesies, sleepers, rompers, and outfits. These clothes are often designed with features such as snaps and stretchy fabrics, making them easy to put on and take off and comfortable for babies to wear.
How Long Will Your Baby Wear 0-3 Month Clothing?
Babies will wear 0-3 month size clothing for the first 3 months of life. However, this can vary depending on the baby’s individual growth rate. Some babies may outgrow this size before reaching 3 months, while others may continue to wear 0-3 month size clothes for a few weeks beyond 3 months.
Generally, if your baby weighs more than 12 pounds or is longer than 24 inches, it’s time to move up to the next size, which is usually 3-6 months.
How Many 0-3 Month Size Clothes Do You Need?
Babies should stay in 0-3 month size clothes up to three months. However, it’s not always be the case because baby gender can influence how long the baby stays in this size. Boys tend to grow faster at this age; therefore, they might outgrow 0-3 months’ size more quickly than girls.
Keep in mind that babies grow quickly, so you should have a few larger sizes on hand as well. It’s always a good idea to start with a smaller number and add more as needed.
Comparison of US Newborn And 0-3 Month Sizes To The UK And Europe
| Size | US | UK/Europe |
| Newborn | Up to 8 lbs | Up to 7.5 lbs (3.4 kg) |
| Up to 21.5 in | Up to 21 in (53 cm) | |
| 0-3M | 8-12 lbs | 7.5-12 lbs (3.4-5.5 kg) |
| 21.5-24 in | 21-24 in (53-61 cm) |
Baby Clothing Brands
Below is a compilation of Newborn vs. 0-3 months clothing sizes from different brands.
Popular Brands Chart For NewBorn Clothing Size
| Brand | Weight (lbs./kg) | Height (in./cm) |
| Carters | 6-9 lbs. / 2.7-4.1 kg | 18-21.5 in. / 45.7-54.6 cm |
| Gerber | 5-8 lbs. / 2.3-3.6 kg | 17-21 in. / 43.2-53.3 cm |
| Old navy | Up to 7 lbs. / Up to 3.2 kg | Up to 18 in. / Up to 45.7 cm |
| Cat + jack | 6-8 lbs. / 2.7-3.6 kg | 18-20 in. / 45.7-50.8 cm |
| Baby Gap | Up to 7 lbs. / Up to 3.2 kg | Up to 18 in. / Up to 45.7 cm |
Popular Brands Chart For 0-3Months Clothing Size
| Brand | Weight (lbs./kg) | Height (in./cm) |
| Carters | 9-12.5 lbs. / 4.1-5.7 kg | 21.5-24 in. / 54.6-61 cm |
| Gerber | 8-12 lbs. / 3.6-5.4 kg | 21-24 in. / 53.3-61 cm |
| Old navy | 7-12 lbs. / 3.2-5.4 kg | 19-23 in. / 48.3-58.4 cm |
| Cat + jack | 9-12 lbs. / 4.1-5.4 kg | 20.5-23.5 in. / 52-59.7 cm |
| Baby Gap | 7-12 lbs. / 3.2-5.4 kg | 18-23 in. / 45.7-58.4 cm |
Similarities Between Newborn And 0-3 Month’s Clothing Size
There are a few similarities between Newborn and 0-3 month’s clothing sizes:
- Both sizes are designed for babies in the first few months of life, typically from birth to 3 months old.
- The weight ranges for both sizes overlap, with some brands offering newborn sizes for babies up to 9 pounds and 0-3 month sizes for babies starting at 7 pounds.
- Both sizes may include onesies, sleepers, and other types of baby clothing that are designed for comfort and ease of use.
Should You Pack Newborn Or 0-3 Month Size Baby Clothes In Your Hospital Bag For Birth?
When packing clothes for your hospital bag, it’s a good idea to include both newborn-size clothes and 0-3 month sizes. Most babies will fit in new-born sizes, some are healthier and they need bigger clothes.
Ultrasound size estimates can be off, and it’s hard to predict the size of your baby. If you’re unsure, consider packing stretchy newborn clothes, like bamboo pajamas, that will fit regardless of baby size.
Final Verdict
Choosing the right size of baby clothes for your Newborn can be challenging. While most babies will fit in newborn-size clothing immediately following birth, it’s important to remember that every baby is different, and size estimates can be off.
Packing both newborn and 0-3 month size clothing in your hospital bag is a good idea, or you can opt for stretchy newborn clothes that will fit regardless of baby size. The most important thing is to choose clothes that are comfortable and easy to put on your baby, whether they are newborn or 0-3 month size.
FAQs On Newborn Vs. 0-3 Month’s Clothing Size
Is 0-3 months the same as 3 months in baby clothes?
No, 0-3 months and 3 months are not the same size in baby clothes. 0-3 months size is designed for babies who weigh between 8-12 pounds and are around 21-24 inches in length. On the other hand, 3 months size is designed for babies who weigh between 12-14 pounds and are around 24-26 inches in length.
Can a newborn wear 0-3 month’s size clothes?
Yes, a newborn can wear 0-3 month’s size clothes if they are on the larger side. It’s always best to try the clothes on your baby before removing any tags or washing the items to ensure a proper fit.
Can a 3-month-old wear newborn size clothes?
It’s unlikely that a 3-month-old will fit into newborn size clothes as they will likely have outgrown this size by then. However, this can vary based on the baby’s size and growth rate.
Are baby clothes sizes accurate?
Baby clothes sizes are generally based on standard measurements and are accurate within a certain range. However, it’s important to remember that babies come in different shapes and sizes, and may not necessarily fit into the exact size indicated on the label.
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