How to Evaluate a Pattern for Ease (And Make Sure It Will Actually Fit You)

Have you ever sewn a garment using the measurement tables, and then found that it didn’t actually fit? It’s super frustrating. You did everything right—measured carefully, picked the correct size according to the chart—and yet the finished garment is too tight and uncomfortable, especially when you sit down, or perhaps you have the opposite problem and find that it’s too large and baggy.

If this has happened to you, you’re not alone. Today, I’m going to walk you through a simple process for evaluating the ease of any pattern before you cut your fabric, which accounts for the way your body changes as you move around, so you can avoid that sinking feeling when a finished garment doesn’t fit.

First, we’ll look at different kinds of ease and the two measurements charts you’ll need to use, and then I’ll give you a step-by-step approach to evaluate a pattern’s ease. So let’s get started!

What Is Ease?

Ease is the difference between your body measurements and the measurements of a finished garment. There are three types:

Positive ease means the garment is bigger than your body. Most woven patterns have positive ease because otherwise they’d compress you uncomfortably. A flowy swing dress has lots of positive ease; a tailored blouse has just a bit.

Zero ease means the garment is the same size as your body—think of a fitted pencil skirt.

Negative ease means the garment is actually smaller than your body. This works because the fabric stretches to fit you. Knit tops, leggings, and swimsuits typically have negative ease. (For a deeper dive into negative ease, check out our full guide: What is Negative Ease and How Does It Work?)

In addition, there is “wearing ease”, which is the amount of room you need in the garment to be able to wear it comfortably, and “design ease”, which is the amount of room added for style – for instance, a very full skirt might have a lot of design ease added. In this post, we are evaluating wearing ease, as the focus is on fit.

The Upton Dress has close to zero ease at the bust for a beautiful fit, and lots of positive ease at the hips for a gorgeous flare!

Understanding the Two Measurement Charts

To evaluate ease properly, you need to understand the two measurement charts that high quality patterns provide. The body measurement chart shows the measurements of the body each size is designed to fit—your bust, waist, hips, and so on. This is what you typically use to select your size: you compare your own body measurements to this chart to find your match.

The finished garment measurement chart is different. It shows the actual measurements of the garment itself once it’s sewn. This is where ease lives. By comparing the two charts, you can see exactly how much bigger (or smaller) the garment will be than the body it’s designed for. A size 18 might be designed for a 48″ hip according to the body measurement chart, but the finished garment at that size might measure 50″—that’s 2″ of positive ease built into the design.

Here is an example of the body measurements and finished garment measurements charts for the Calder Pants, which are wide leg, flowy pants:

The Calder Pants

The Sitting-Down Factor: Why Your Body Needs Room to Move

Here’s something that doesn’t get talked about enough: your body changes shape when you sit down. For most people—especially those of us with curves—our waist, hips, and thighs spread out when we’re seated. This can add several inches to your measurements.

This matters because you don’t just wear clothes while standing perfectly still. You sit at your desk, in your car, at dinner, on the sofa. If a garment fits you standing but doesn’t account for how your body expands when seated, you’ll end up feeling compressed, uncomfortable, or even end up with splitting seams.

How to Evaluate a Pattern: A Step-by-Step Approach

Here’s how to make sure you are picking the right size, with the correct amount of ease you need:

Step 1: Take two sets of measurements

Measure yourself standing up as you normally would. Then, sit down in a chair the way you’d naturally sit, and measure yourself again at the waist, hip, and thigh.

Step 2: Use your standing measurements to find your size

Look at the pattern’s body measurement chart and identify which size (or sizes, if you’re grading between them) corresponds to your standing measurements. This is your starting point.

Step 3: Check the finished garment measurements for that size

Now look at the finished garment measurement chart for that same size. These numbers tell you how big the actual garment will be once it’s sewn.

Step 4: Compare your sitting measurements to the finished garment measurements

This is the key evaluation step. Is your sitting measurement at each point smaller than the finished garment measurement? If yes, you’re good to go—the garment will accommodate both your standing and sitting body. If your sitting measurement is larger than the finished garment measurement, you have a decision to make.

Step 5: Size up or adjust if needed

When the finished garment measurement is smaller than your seated measurement, you’ll either need to choose a larger size or make pattern adjustments to add room where you need it (such as a full bum adjustment)

Exceptions to the Rule

Not every situation requires sizing up when your sitting measurements exceed the finished garment. Here are a couple of exceptions:

Knits: If a pattern is designed for knit fabric, the fabric will stretch with your body. If you’re comfortable with that stretched, close-fitting feeling when seated, you may not need to size up. The fabric will simply stretch more when you sit. This is also true for many stretch wovens, such as stretch denim, although depending on the stretch %, it may or may not be comfortable.

Small amounts of negative ease in wovens: If your seated measurements are only a small amount larger than the finished garment measurement, and you’re  comfortable with a bit of compression when seated, that may be perfectly fine for you. This is a personal preference—some people don’t mind feeling snug when they sit, while others find it uncomfortable.

The Elmwood Skirt is fitted, and may have negative ease when sitting, depending on your seated measurements.

Now you know how to evaluate patterns for ease, using your sitting and standing measurements, you’ll be well on your way to garments that fit comfortably all day long!

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