Finding beautiful clothing is easy.
Finding clothing that actually fits?
That's much harder.
One of the biggest reasons people hesitate to order custom clothing online is simple:
"What if I measure myself wrong?"
It's a reasonable concern.
A great designer can create an incredible garment—but even the best craftsmanship depends on accurate measurements.
The good news is that measuring yourself isn't nearly as difficult as many people think. With a soft measuring tape, a mirror, and a few simple techniques, you can collect measurements that help designers create garments that fit beautifully.
This guide explains every measurement you'll likely need, common mistakes to avoid, and practical tips to improve accuracy.
To measure yourself for custom clothing, use a flexible measuring tape, stand naturally, wear fitted clothing, and avoid pulling the tape too tightly. Record each measurement carefully and repeat important measurements twice to confirm accuracy.
• Tools you'll need
• General measuring tips
• Body measurements explained
• Men's measurements
• Women's measurements
• Common mistakes
• Frequently Asked Questions
Custom clothing starts with one thing:
Your measurements.
Unlike ready-to-wear clothing, there isn't a standard size chart to fall back on.
Every measurement affects how the garment fits.
Even a difference of half an inch (about 1.3 cm) can change the way a jacket sits, how sleeves hang, or how a dress moves.
Good measurements help designers spend less time making corrections and more time creating garments that fit as intended.
Before measuring yourself, gather these items:
• A soft measuring tape (fabric tape)
• A full-length mirror
• A notepad or phone
• A pen
• Close-fitting clothing
• A friend or family member (recommended)
Although it's possible to measure yourself alone, having someone assist often improves accuracy.
A few simple habits can make a big difference.
Choose fitted clothing such as leggings, athletic wear, or a close-fitting T-shirt.
Avoid bulky sweaters, jackets, or loose garments that add extra thickness.
Don't suck in your stomach.
Don't puff out your chest.
Don't stand unusually straight.
Relax.
Designers want your natural posture—not your "photo posture."
Many inaccurate measurements happen because the measuring tape slopes upward or downward around the body.
Whenever possible, use a mirror to check that the tape remains parallel to the floor.
A flexible measuring tape should lie flat against your body.
It should feel snug without squeezing.
A simple rule is this:
The tape should touch your body—not compress it.
If the tape leaves marks on your skin, it's too tight.
If it hangs loosely, it's too loose.
Measure around the fullest part of the chest while keeping the tape level across your back.
Relax your arms while someone else takes the measurement if possible.
Measure your natural waist—not where your pants usually sit.
Your natural waist is typically the narrowest part of your torso.
Don't hold your breath.
Stand normally.
Measure around the fullest part of your hips and seat.
Keep your feet together for the most accurate result.
Measure from the edge of one shoulder to the edge of the other across your upper back.
This measurement helps jackets, shirts, and dresses sit correctly.
Start at the shoulder seam.
Measure over the slightly bent elbow.
Finish at the wrist bone.
Bending your arm slightly allows room for movement.
Wrap the tape around the base of your neck.
Leave enough room to comfortably fit one finger beneath the tape.
Measure from the highest point of the inner thigh to the bottom of the ankle.
For pants you already own and love, you can also measure the inseam directly from the garment.
Measure from your natural waist to the desired trouser length along the outside of the leg.
Stand barefoot against a wall.
Measure from the floor to the top of your head.
Depending on the garment, your designer may also ask for:
• Arm circumference
• Wrist circumference
• Thigh circumference
• Calf circumference
• Shoulder-to-waist length
• Waist-to-floor length
• Back width
• Bicep measurement
• Knee circumference
• Dress length
The more complex the garment, the more measurements may be required.
Many fit problems begin before the fabric is ever cut.
Avoid these common mistakes:
❌ Wearing bulky clothing
❌ Pulling the tape too tightly
❌ Leaving the tape too loose
❌ Measuring over thick belts
❌ Guessing measurements
❌ Measuring only once
❌ Looking down instead of using a mirror
❌ Recording numbers incorrectly
Always double-check important measurements before submitting them.
Absolutely.
Professional tailors often confirm important measurements multiple times before beginning production.
A good habit is:
Measure.
Write it down.
Measure again.
If both numbers match, you're probably accurate.
If not, measure a third time.
Many people tell designers:
"I'm usually a medium."
or
"I wear size 12."
Unfortunately, clothing sizes vary dramatically between brands.
Actual body measurements are far more reliable than clothing labels.
Weight changes.
Fitness routines.
Pregnancy.
Body composition.
All of these can affect how clothing fits.
If your measurements change significantly before production begins, tell your designer immediately.
Small updates early can prevent major alterations later.
✔ Measure at the same time of day.
✔ Stand on a flat surface.
✔ Wear similar undergarments to those you'll wear with the finished garment.
✔ Ask someone to help.
✔ Take photos of the measuring tape if requested.
✔ Save your measurements for future projects.
Before sending measurements, confirm that you have:
✔ Chest/Bust
✔ Waist
✔ Hips
✔ Neck
✔ Shoulder Width
✔ Sleeve Length
✔ Inseam
✔ Outseam
✔ Height
✔ Any additional measurements requested by the designer
Yes, but assistance usually produces more accurate results, especially for shoulder width and back measurements.
Wear fitted clothing whenever possible. Bulky clothing can add extra inches and reduce accuracy.
If your weight or body shape changes noticeably, update your measurements before ordering another garment.
Measurements are always more reliable than clothing sizes because sizing varies between brands.
Sometimes.
A wedding gown may require additional measurements that aren't necessary for a casual shirt.
Accurate measurements are one of the most important parts of custom clothing.
They help transform an idea into a garment that feels comfortable, looks polished, and reflects your body—not a standard size chart.
Take your time.
Measure carefully.
Ask questions when you're unsure.
The extra effort pays off every time you put on a garment made specifically for you.
Instasew helps customers connect with experienced independent fashion designers who create garments tailored to individual measurements and personal style. Through guided communication and structured project management, Instasew makes custom clothing easier to order with confidence.