Sewing Pattern Sizes Are Different Than Store-Bought Clothing

One of the biggest surprises for new sewists is that sewing pattern sizes often don't match the size you normally buy in stores.

Don't let the number on the pattern discourage you. Pattern sizes are based on body measurements—not ready-to-wear sizing—and every pattern company uses its own sizing charts.

The best way to choose the correct size is to measure yourself and compare those measurements to the pattern's size chart.

Why Pattern Sizes Are Different

Ready-to-wear clothing varies from one brand to another.

Sewing patterns are designed using standardized body measurements so you can create garments that fit more accurately.

That means you might sew a different size than the clothes hanging in your closet—and that's completely normal.

Measure Yourself Before You Begin

Before selecting a size, you'll want to measure:

Bust

Measure around the fullest part of your bust while keeping the tape measure level.

Waist

Measure your natural waist—the narrowest part of your torso.

Hips

Measure around the fullest part of your hips and seat.

Height

Some patterns also include height recommendations that can help determine whether length adjustments may be needed.

Which Measurement Should You Follow?

If your measurements fall into different sizes, don't panic.

This happens to almost everyone.

Most experienced sewists choose the size that matches the most important measurement for the garment:

Many patterns are designed so you can blend between sizes for a better fit.

Finished Garment Measurements

Many patterns also include Finished Garment Measurements.

These tell you how large the completed garment will be after it's sewn.

They help you decide whether you'd like:

• A closer fit
• A relaxed fit
• Extra ease
• More room for layering

Finished garment measurements are often just as important as the body measurement chart.

Tips for Better Pattern Fit

✔ Always use a soft measuring tape.

✔ Ask someone to help you measure if possible.

✔ Measure while wearing lightweight clothing.

✔ Stand naturally—don't suck in your stomach!

✔ Double-check your measurements before cutting fabric.

Laura's Studio Tip

Ignore the number on the pattern and focus on the measurements instead. The goal isn't to sew a certain size—it's to create clothing that fits beautifully and makes you feel confident.

Frequently Asked Questions

Why is my sewing pattern size different from my clothing size?

Because pattern companies use body measurements rather than retail sizing, which varies between clothing brands.

What if I'm between sizes?

Many sewists blend between sizes to achieve a better fit.

Should I choose the larger size?

Not necessarily. Always compare your measurements to the pattern's size chart before deciding.

Ready to Find Your Perfect Pattern?

Now that you understand how sewing pattern sizes work, you'll be able to choose patterns with greater confidence and achieve better-fitting results.

Explore our sewing pattern collections and start your next project knowing you've selected the right size from the very beginning.