Baby Size Guide: clothing, shoes & accessories
Kristell A.Are you preparing for your baby's arrival or looking to buy perfectly fitting clothes? Finding the right baby clothing size can be a real challenge! Between age indications, brand differences, seasonality, and the rapid growth of little ones, it's essential to be well-informed by relying on reliable benchmarks like height and weight. Take our practical advice and detailed charts into account to avoid purchasing errors. In this baby size guide, we explain how to choose the ideal size for your child's clothes, shoes, and accessories.
Whether you're an experienced or first-time parent, these tips will help you make informed decisions and find clothes perfectly suited to your little one's size and comfort. And since babies grow quickly, why not explore our collection of carefully selected second-hand baby clothes? It's an excellent way to save money while being more environmentally friendly. Discover our suggestions for finding quality items at affordable prices!
1. How to choose the right baby clothing size?
Baby clothes are classified by age (0 months, 0-3 months, 1 month, 3 months, 6 months, etc.), but this classification remains indicative. Since each baby has unique growth, weight and height are much more reliable criteria. For example, a 3-month-old baby weighing 6 kg and measuring 60 cm would likely wear 3-6 months. Here are some guidelines:
- Newborn (50 cm / 3 kg): Plan for newborn or 1 month size.
- 1-3 months (55-60 cm / 4-5 kg): Opt for 3 months size.
- 3-6 months (60-67 cm / 5-7 kg): Go for 6 months size.
- 6-9 months (67-72 cm / 7-9 kg): Look for 9 months size.
- 9-12 months (72-76 cm / 9-10 kg): Buy 12 months size.
- 12-18 months (76-82 cm / 10-11 kg): 18 months will be ideal.
If your baby is between two sizes, choose the larger one: they should be comfortable in their clothes.
Baby clothing sizes: differences from one brand to another
High-end layette brands sometimes have different cuts. For example, some French brands size rather normally, like for Jacadi baby clothes, while Scandinavian brands size larger. If you are buying luxury second-hand clothes, always refer to the measurements provided by the seller rather than the size indicated on the label.
Some brands indicate sizes not only by height and weight but also by chest, waist, and hip circumference. These measurements help refine the choice of clothing, accessories, and shoes, especially for fitted items like bodysuits, pants, hats, and soft shoes.
How to measure your baby for clothes?
- Chest circumference: Measure under the armpits, wrapping the tape measure around the bust without tightening.
- Waist circumference: Place the tape measure around the belly, at the navel.
- Hip circumference: Measure around the hips, making sure to include the diaper if the baby is wearing one.
Baby clothing size chart
|
Label |
Height (cm) | Weight (kg) | Chest circumference (cm) | Waist circumference (cm) | Hip circumference (cm) |
|---|---|---|---|---|---|
| Newborn (50) | 45-50 | 2.5-3.5 | 35-37 | 33-35 | 35-37 |
| 1 month (54) | 50-54 | 3.5-4.5 | 37-39 | 35-37 | 37-39 |
| 3 months (60) | 55-60 | 4.5-6 | 39-42 | 37-39 | 39-41 |
| 6 months (67) | 61-67 | 6-7.5 | 42-45 | 39-41 | 41-43 |
| 9 months (72) | 68-72 | 7.5-9 | 45-47 | 41-43 | 43-45 |
| 12 months (76) | 73-76 | 9-10 | 47-49 | 43-45 | 45-47 |
| 18 months (82) | 77-82 | 10-11 | 49-51 | 45-47 | 47-49 |
2. Choose the right size for baby shoes
Baby's first steps are an important moment! Baby shoes must be chosen carefully to ensure comfort and safety. To measure baby's foot, use a foot measuring device or a simple tape measure. Place baby's foot flat and measure from the heel to the tip of the longest toe.
How to choose the right size for baby shoes?
- Baby's feet don't always grow synchronously. Measure both feet and base your choice on the larger one to select the correct size.
- Check that their toes are not compressed by gently pressing on the tip of the slipper. Their longest toe should have a little space. It is advisable to leave a margin of 0.8 to 1.2 cm to allow the foot to expand and stretch naturally.
- To ensure proper foot support in the shoe, insert your index finger between the heel and the back of the shoe. There should be a slight gap for comfort.
- For the first few months, baby shoes primarily protect their feet from cold and bumps. When the little one starts to stand and walk, they must also provide good support to help them.
Baby shoe, sock, and tight size chart
| Foot length (cm) | Shoe size | Approximate age |
| 8-9 | 13/14 | 0-3 months |
| 9-10 | 15/16 | 3-6 months |
| 10-11 | 17/18 | 6-9 months |
| 11-12 | 19/20 | 9-12 months |
| 12-13 | 21/22 | 12-18 months |
| 13-14 | 23/24 | 18-24 months |
3. What size for baby accessories?
For baby accessories, whether for summer or winter, to properly protect your little one's head without being too tight, it's essential to measure their head circumference correctly. Use a tape measure and place it above the eyebrows, going around the head without tightening.
Baby size chart for hats, bonnets, and caps
| Head circumference (cm) | Size | Approximate age |
| 35-37 | 0-1 month | Newborn |
| 38-40 | 1-3 months | 1 to 3 months |
| 41-43 | 3-6 months | 3 to 6 months |
| 44-46 | 6-12 months | 6 to 12 months |
| 47-49 | 12-18 months | 12 to 18 months |
4. Our tips to avoid size errors
- Opt for clothing with snaps or elastic bands for easier dressing.
- Anticipate baby's rapid growth by buying slightly larger clothes.
- Try different brands: some run smaller or larger.
- Check each brand's specific baby size guide before purchasing.
5. Tips for smart and sustainable shopping
- Buy seasonally: There's no need to buy a newborn coat if your baby is born in summer.
- Opt for high-end second-hand: Luxury brands in perfect condition at affordable prices are a great economic and ecological choice.
- Prioritize natural materials: Organic cotton is ideal for respecting baby's skin.
6. FAQ: All about baby sizes
1. Why does my baby wear a different size than their age?
Every baby grows at their own pace. It's best to rely on their weight and height rather than their age when choosing clothes.
2. How do I know if a garment is too small for my baby?
If a bodysuit or pajamas leave red marks on the skin, are difficult to put on, or restrict movement, they are probably too small.
3. What type of clothing should I prioritize for a fast-growing baby?
Opt for evolving and adjustable clothing such as expandable leggings, bodysuits with multiple snaps, or pants with elastic waistbands.
4. Should I buy clothes in advance?
It's advisable to buy according to the season and your baby's development. Anticipating too much can result in unusable clothes.
Choosing the right size for baby clothes is first and foremost about ensuring their comfort and freedom of movement. By prioritizing natural materials and appropriate cuts, you offer your little one optimal well-being. And since babies grow quickly, a bonus tip: Consider second-hand baby clothes, an economical and ecological alternative for dressing your child in quality items. To build your little one's wardrobe, consume more responsibly by understanding why buying second-hand for baby is an excellent choice.
And you, have you noticed size differences between brands? Share your experience and tips in the comments!