Two garments with the same size label can behave completely differently on the body. One might feel easy and comfortable through your shoulders, while the other does not. One might sit on the waist as you would imagine, while the other is pulling at your hips. Knowing what size you are can give you a good jumping-off point, but it won’t tell you everything about how the fabric is moving, how the seams fit, where the hem is placed, or if a garment will be comfortable when you are wearing it. The first step in your check is not whether it looks good or bad but whether it is worth the time and energy to put the garment on, stand in front of a full-length mirror, and look at the main fit points: shoulder, waist, sleeve, hem, and trouser break. Once you’ve done that, do some movement. Sit down. Lift your arm. Walk. Turn to the side. Is there pulling, bunching, twisting, gaping or constant adjusting going on? This is a far better indicator than the number stitched into the label.
A common trap for those just starting to check fit is thinking they are doing something wrong because a garment does not work, but garments are made from patterns, fabrics, and proportions specific to each brand. If the fabric is stiff and has very little stretch, it will not be the same fit as a soft and stretchy fabric. A cropped jacket can change the waistline of an outfit, while a long jacket can hide or flatten the silhouette. If the shoulder seam sits slightly further back, the shoulder might pull. If the sleeve is wider at the cuff, it might be more comfortable. If there are slight differences in a seam placement, it could be the difference between looking neat and feeling uncomfortable.
Try holding up two sizes to see if you have the best fit without looking at which is which. You might be surprised by the result. Does one pull in the front? Does one sag at the shoulder? Does one cut off cleanly on your shoe but the other bunches around your ankles? This is the way to train yourself to check proportion without size labels, so you don’t rely on that. It also gives you the chance to notice if you could get the best fit from a garment if you just changed the fit at hem, sleeve length, or rise.
The rest of your outfit will change to fit, too. A top that is too long may make a skirt look shapeless unless it is tucked or shortened. If the bottoms are bunched at the shoes, even if the colors of your trousers and shoe are in a good ratio, the bottom half could feel bulky. If the button of a blazer pulls to the side, your clean-cut outfit might feel less polished. When you start fitting, you can more easily decide on the color pairings, how and what you layer, what accessories fit the rest of your outfit, because the structure of the garment is working in its favor.
Don’t expect perfect fit on every piece. The clothes you wear everyday are meant to move with you, to fit the occasion, or to complete your look without distracting you. Some pieces are meant to look loose, oversized, fitted, cropped, or even draped. You want to ensure the fit looks intentional and can be comfortable. A loose button-down can still look neat with the right proportions, like a shoulder that lines well with the rest of a look, fabric that’s not too heavy for a look that pairs well, and pants you can comfortably tuck the shirt into. A very fitted dress can look fine, or you can struggle to walk if it keeps pulling.
The next time you check a piece of clothing and the number on the label doesn’t feel right, take a moment. Look at the mirror, look at the fit, and look at how you pair it with your shoes and other items. If that makes dressing you or pairing your outfit easier, you’ve checked fit. If the size number looks right and you can’t stop adjusting, look at the fit first.