A dress with a circle skirt is a fitted bodice joined at the waist to a half-circle skirt (or a fuller one), so the fullness comes from the cut rather than from gathers: the waist seam stays flat and the hem swings. Sew it in a fabric with drape such as viscose, crepe or cotton lawn, with about 3.5 m (3 7/8 yd) of 140 cm (55 in) wide fabric for a knee length and a 50 cm (20 in) invisible zip at center back, and let the skirt hang overnight before you hem it.
Why a half circle rather than a full circle on a dress?
On a skirt alone, the waistband carries the weight. On a dress, the waist seam does, and a full circle at knee length in viscose weighs noticeably more than a half circle, pulling the bodice down and stretching the seam. The half circle gives most of the swing with half the weight, nests on folded fabric as two quarter-circle pieces, and shows a print the right way up on more of the hem. It is the version that fit-and-flare dress patterns usually offer.
If you want the full 1950s circle, cut the skirt from a circle skirt pattern with the waist radius computed from the bodice waist seam, use a crisp fabric such as cotton sateen or taffeta that holds its weight, and consider a lining or a petticoat.
What do you need to sew a circle-skirt dress?
The pieces:
- Bodice front, cut on the fold, with bust and waist darts.
- Bodice back, cut as two halves for the zip.
- Neck facings front and back, or bodice lining and two straps for a strap version.
- Skirt front, a quarter circle cut on the fold that opens into a half circle, and skirt back, cut as two quarter-circle halves so the zip can continue into the center back seam.
- Sleeves, or bias strips for the armholes.
- Pocket bags, four, best cut from a lighter lining fabric.
Notions: a 50 cm (20 in) invisible zip, 40 cm (1/2 yd) of lightweight fusible interfacing, and narrow elastic if the sleeves are puffed. Seam allowances of 1.5 cm (5/8 in), 1 cm (3/8 in) at the neckline and at the hem.
| Length | Fabric at 140 cm (55 in), short sleeves |
|---|---|
| Above the knee | 3 m (3 1/4 yd) |
| Knee | 3.5 m (3 7/8 yd) |
| Midi | 4.2 m (4 5/8 yd) |
Each quarter-circle skirt piece needs a square of fabric as wide as the hem radius plus allowances, and the bodice and sleeves go beside or below. On 110 cm (45 in) fabric, a knee-length half circle no longer fits in one piece per half, so cut the skirt in four quarters with seams at the sides and center front, or shorten it.
How do you make the skirt waist match the bodice?
This is the one calculation in the project. The skirt's waist edge must be the same length as the bodice waist seam, which is your waist plus the wearing ease of the bodice, usually 2 cm (3/4 in), plus the darts taken out. For a 72 cm (28 1/4 in) waist with 2 cm of ease, the finished waist seam is 74 cm.
A half circle's waist is half a circumference, so the waist radius is that length divided by π (3.142): 74 ÷ 3.142 = 23.6 cm (9 1/4 in). The hem radius is the waist radius plus the skirt length; with a 60 cm (23 5/8 in) knee length, that is 83.6 cm. Draw both arcs from the same corner of the folded fabric with a tape pinned at the center, and add 1.5 cm at the waist and 1 cm at the hem. The circle skirt calculator does the arithmetic for a half, three-quarter or full circle.
Then staystitch the waist edge at once. Most of that curve runs across the bias, and it will grow by a centimeter or two if you handle it unstitched, which is the usual reason a circle skirt ends up wider than the bodice.
How do you sew a dress with a circle skirt, step by step?
- Cut and mark. Cut the bodice and facings, then the skirt pieces with the straight edge of each quarter on the fold or at center back. Mark the darts, the notch at the zip end and the center front of the skirt.
- Staystitch the bodice neckline and the skirt waist edges, 1.2 cm (1/2 in) from the edge.
- Sew the darts. Bust darts pressed down, waist darts toward center front and center back.
- Shoulders and facing. Join the shoulders, attach the interfaced facing to the neckline, trim, clip, understitch and press inside. For straps, line the bodice instead and catch the straps in the top seam.
- Bodice side seams, pressed open.
- Skirt pockets and seams. Sew the pocket bags to the side seam edges 5 cm (2 in) below the waist, sew the side seams around the bags, and sew the center back seam of the skirt from the hem up to the zip notch, about 25 cm (10 in) below the waist.
- Join the bodice and the skirt right sides together, matching center front, side seams and the center back edges. The skirt waist is a convex curve and the bodice a straight edge; pin every 5 cm and sew with the skirt on top. Press the seam up.
- Insert the zip at center back through the bodice and into the skirt, matching the waist seam on both sides, then close the seam below it. How to insert an invisible zip shows how to get the waist seam to meet exactly.
- Sleeves set in, or armholes bound.
- Hang the dress for 24 hours, on a dress form or a hanger clipped at the waist.
- Level the hem on the body, with someone measuring up from the floor, then trim and sew a narrow hem: stitch 6 mm (1/4 in) from the edge, fold on the stitching, fold again and stitch close to the inner fold. How to hem covers the narrow hem and the rolled-hem foot.
- Press, lowering the iron onto the hem rather than sliding it around the curve.
Which fabric works for a circle-skirt dress?
| Fabric | Result |
|---|---|
| Viscose challis, crepe | Soft folds, the most swing; hangs and stretches most, line or wear a slip |
| Cotton lawn, voile | Light and crisp; a sheer lawn needs a lining in the skirt |
| Cotton poplin, chambray | Holds a smooth cone shape, less swing; easy for a first dress |
| Cotton sateen, taffeta | Stands away from the body, 1950s look; best with a full circle |
| Scuba, ponte | Stable, no hanging needed; use a knit bodice or a looser woven fit |
Avoid one-way prints and napped fabrics: at the sides of a circle the motif or the pile runs sideways. Stripes and plaids become diagonal across most of the skirt, which can look intentional if the center front is cut on grain.
What mistakes should you avoid?
- Hemming too soon. The bias sections of the hem drop by 1 to 3 cm (3/8 to 1 1/4 in) overnight in viscose. Hem the next day, after leveling.
- A deep hem. On a curve, a 3 cm hem is longer than the skirt it is folded against and ripples. Keep it at 1 cm, or use bias binding.
- A waist seam that sits too low. Check your back waist length and shorten the bodice if needed; a circle skirt attached 2 cm below the waist drags on the hips and the bodice wrinkles.
- Heavy pocket bags. Cut them from lining fabric, and stitch the top of each bag into the waist seam so the pocket hangs from the waist and not from the hip seam.
- Stretching the waist edge while sewing it to the bodice. Staystitch first, pin closely and let the feed dogs do the work.
Can Sewly draft the dress for you?
Sewly's fit-and-flare dress pattern has the half circle as one of its three skirt options, drafted so that the skirt waist equals the bodice waist seam with the ease and darts already accounted for, at mini to maxi length with a 25 cm (10 in) adjustment either way, and with in-seam pockets on by default. The sewing guide lists the zip and interfacing, gives the fabric quantity for 110, 140 and 150 cm wide fabric and reminds you to hang the skirt before hemming. For the skirt on its own, with a waistband instead of a bodice, see how to sew a circle skirt.