Buying guide: which size to choose online to avoid mistakes

Buying clothes online offers undeniable convenience, but it often leaves you hesitant when choosing the right size, especially when discovering a new brand. Between French and international sizes, and cuts that vary from one manufacturer to another, it's easy to make a mistake. This guide gives you all the keys to choosing the right size from your very first purchase, and thus significantly reduce the risk of returns.

Why do sizes vary so much from one brand to another?


Contrary to popular belief, there is no universal standardization of sizes in the fashion industry. Each brand develops its own cutting patterns, based on its own measurement system, which explains why the same size 38 can correspond to very different measurements depending on the brand. This lack of standardization is the main source of confusion for online shoppers.
This variability is also explained by cultural differences between countries: a French size 38 does not correspond to the same measurement as an Italian size 38 or a M Anglo-Saxon. Understanding these international differences becomes particularly important when buying from foreign brands, a practice that is becoming increasingly common with the development of online commerce on a global scale.

How to take measurements correctly


Before making any online purchase, it is essential to know your own measurements precisely rather than relying solely on your usual store size. Use a flexible measuring tape and measure your bust at its fullest point, your waist at its narrowest point (usually just above the navel), and your hips at their widest point.

For trousers and skirts, also add your inseam measurement, which is particularly useful for determining the ideal length. Write down these measurements precisely and keep them handy when shopping online: they are your most reliable reference, much more accurate than a simple size chart which can vary depending on the brand and cut.

How to use a store's size guide


Most reputable online stores offer a detailed size guide, usually accessible from the product page. Always take the time to consult it before making a purchase, comparing your own measurements to the information provided rather than relying solely on the size label. This guide often specifies the exact measurements for each size, allowing for a direct comparison with your own measurements.
If you are hesitating between two sizes, several factors can guide your choice. For a stretch fabric containing elastane, it is generally best to choose the smaller size, as the fabric will naturally adapt to your body shape. For a stiff fabric like non-stretch denim, opt for the larger size to avoid any discomfort, as these fabrics tend to stretch slightly with wear.

The clues to look for on the product sheet


Beyond the simple size chart, several elements on the product page can provide useful information. The fabric composition gives valuable clues about the expected fit: a percentage of elastane greater than 5% generally suggests a closer-fitting and stretchy cut, while a 100% cotton or stiff linen fabric often implies a looser cut to compensate for the lack of elasticity.
Customer reviews are also a valuable resource, with many shoppers specifying whether the garment runs large, small, or true to size. Pay particular attention to reviews mentioning the person's body type, as this will help you better visualize the fit if your own figure is similar. Photos posted by other customers also offer a concrete glimpse of how the garment actually looks, often more reliable than the official product photos alone.

What to do in case of a sizing error


Despite all precautions, a sizing error can still occur. Before making a purchase, always check the store's return and exchange policy, as well as the time allowed for making a request. Most reputable stores offer free or low-cost returns within a reasonable timeframe, usually between 14 and 30 days after receipt.
Always keep the original packaging and tags until you're sure the garment fits you perfectly; this will greatly facilitate any returns if necessary. Don't hesitate to contact customer service if you have any doubts before buying: most stores have a team that can advise you on choosing the best size for you.

Conclusion


Choosing the right size online requires a bit of method, but it helps avoid the vast majority of mistakes and tedious returns. By carefully taking your measurements, always consulting each store's size guide, and considering the garment's fabric, you'll maximize your chances of receiving a perfectly fitting garment on the first try. Always remember to check the return policy before purchasing; it's your safety net in case of unforeseen circumstances.

Frequently Asked Questions


  Why do sizes vary from one brand to another?
  Each brand develops its own pattern-making techniques based on its own measurement system, with no universal standardization in the fashion industry.


  What precautions should you take before making an online purchase?
 

Measure your bust, waist, and hip circumference, adding the inseam for pants and skirts.



  What size should I choose if I'm unsure about a stretch fabric?
 

Generally, choose the smaller size, as the fabric containing elastane will naturally adapt to your body shape.



  Are customer reviews helpful for choosing the right size?
 

Yes, many shoppers specify whether the garment runs large or small, which provides valuable information to complement the size guide.



  What should you check before buying if you're unsure about the size?
  Always check the store's return and exchange policy and the applicable deadlines before finalizing your purchase.


  Should you keep the packaging of a garment bought online?
 

Yes, keep the packaging and tags until you confirm that the garment fits you; this greatly facilitates any potential returns.


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