Blend Sizes When your measurements don't match the pattern

What if my measurements fall between sizes?

Patternmakers have to choose a framework for sizes and cannot anticipate every potential body shape, so requiring more than one size in a pattern is a relatively common occurrence. Fortunately, we can find joy and empowerment by making our own clothes! When we view measurements as the data it is, we can feel good about making ourselves beautiful garments that fit our own unique shapes.

We are all differently beautiful.

Use removable marking tool to mark sizes (shown here: G upper bust and waist + H bust) in different places around the pattern.

Start by plotting key points on your pattern sheet with a removable marking pen (I use Frixion pens, removable w/ heat or erasers). Trace corners and darts appropriate to the size you need at each location, then connect them with lines. Example: I used the H dart at the bust because I traced the H size. I used the G dart at the waist because I need a G sized waist.

tip: for best results while tracing, tape down the folded edge of your tracing paper to the fold line on the paper pattern, that way it won't shift as you move around the pattern to trace.

Trace plot points, then connect the marks
Use a curve if you have one that matches, otherwise a straight line works just fine.

Trace corners at least 1/2" in each direction to get a smooth transition between sizes, then connect with a curve or a straight line

Finished transition H bust to G waist.

When the upper bust is smaller than the bust area, extend the bodice after the notch.

Use a straight edge to extend smoothly between lines.
Finished transition under the arm

Parallel changes are crucial - keep these guidelines in mind

  • Be sure that you repeat the same changes on the back bodice and both facings.
  • If you adjusted under the arm, adjust the sleeve under the arm to match using the same method.
  • Choose your skirt size based on your waist adjustments.
Finished Multi-sized bodice pattern
Created By
Karen LePage

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