On this page
  1. Why hems drop unevenly
  2. Step 1: Let it hang
  3. Step 2: Level the hem
  4. Step 3: Choose a finish
  5. Narrow hem, step by step
  6. Bias binding the hem
  7. Common problems
  8. FAQ
biasbiasbiasbiasStraight grainstays put4 bias zonesstretch and dropFix:hang 24 h, then level
A full circle crosses the bias at four points.

The problem

Why circle skirt hems drop unevenly

Around a circle, fabric grain changes continuously. Where the hem falls on the true bias (at 45° to the threads), fabric naturally stretches under its own weight, growing longer after a day or two of hanging. Hemming straight after cutting results in a skirt that sags in four uneven spots.

Illustration of a coral circle skirt hanging on a wooden hanger by a sunny window

Step 1

Let the skirt hang

  1. Finish the waist so the skirt hangs the way it will be worn.
  2. Hang it on a skirt hanger or dress form for 24 hours — up to 48 hours for drapey chiffon, crepe, or rayon.
Illustration of a hand marking a skirt hem with chalk beside a yardstick on a dress form

Step 2

Level the hem

  1. Put the skirt on a dress form or have someone help you while you wear your usual shoes.
  2. Measure up from the floor with a yardstick or hem marker and mark your finished length every few inches.
  3. Lay the skirt flat and trim to an even allowance below the marks.

Planning your project? The circle skirt calculator automatically adds your hem allowance to the cut hem radius, giving you ample extra length to level cleanly.

Step 3

Choose a hem finish

Match the finish to your fabric weight — and keep the allowance narrow on a curve.

Circle skirt hem finishes
FinishAllowanceBest for
Narrow rolled hem1/4"–3/8" (6–10 mm)Light fabrics, chiffon, cotton lawn
Double-turned narrow hem1/2" (12 mm)Quilting cotton, poplin
Bias-bound or bias-faced hemNone to 1/4"Heavier fabrics, contrast trim
Horsehair braid1/4"Formal and bridal skirts that stand out
Serged edge (overlocked)NoneKnits, quick projects

Avoid wide turned hems on curved edges: the outer cut edge is longer than the line it folds up against, so a 2" hem will bunch and ripple.

Illustration of a sewing machine foot topstitching a narrow turned hem on coral fabric

Technique

Narrow hem, step by step

  1. Stay-stitch 1/4" from the raw edge all the way around — this guideline helps the fabric turn smoothly.
  2. Press the edge up along the stitching line.
  3. Fold again to enclose the raw edge and press.
  4. Topstitch close to the inner fold, easing gently around the curve.
Illustration of two orange fabric tapes, one single folded and one double folded

Technique

Bias binding the hem

Bias binding is the cleanest finish on heavier fabrics because flexible bias tape curves smoothly along the hem.

Measure your hem circumference — a 28" waist, 22" full circle produces a 166" hem — and determine your square size with the bias tape calculator. Steam-shape the tape into a matching curve before stitching.

Troubleshooting

Common problems

Wavy hem

The fabric stretched while sewing — use a walking foot, stitch slowly, and do not pull.

Uneven length

The skirt was not left to hang long enough; re-level it.

Hem flips up

The allowance is too deep for the curve; trim to 1/4" and re-sew.

Half circle skirts experience the same bias drop at two points instead of four — our half circle skirt calculator incorporates the same hem allowance calculation.