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Sports bra

Pull-on, racer back. 3 pieces, drawn here for size 40.

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On the bodyFront and back
Front
Back
Pattern piecesWith seam allowance
FRONTBACKUNDERBAND
Pieces3
  • Front1× on fold (and 1× lining), 23 by 37 cm
  • Back1× on fold, 23 by 27 cm
  • Underband1× on fold, 35 by 10 cm
MeasurementsSize 40
  • Bust92.0 cm
  • Underbust78.5 cm
  • Bust point depth28.0 cm
  • Back length (nape to waist)40.6 cm
  • Neck37.2 cm
Block settingscm
  • Bust compression (negative ease)-6.0
  • Band stretch taken off-10.0
  • Bust depth adjust0.0
  • Front neckline above the band15.0
  • Neck widening1.0
  • Strap width at the shoulder4.0
  • Side seam height10.0
  • Racer strap width5.0
  • Back neck drop2.0
  • Underband width4.0
Fit checkscm
  • Underbust78.5
  • Finished bust86.0
  • Band68.5
  • Shoulder seam4.0
How to sew7 steps
  1. Cut and markCut every piece with the grain arrow parallel to the selvedge. Transfer the notches and the marks with tailor's chalk or a short snip into the seam allowance.
  2. Set up for stretchUse a firm sports jersey with good recovery, lined with power mesh at the front. Stretch needle, stretch stitch or overlocker.
  3. LiningBaste the front lining to the front round all edges.
  4. ShouldersSew the shoulder seams of the front and the racer back.
  5. Neckline and armholesFinish the neckline and the armholes with fold-over elastic or a band, stretching it a little round the curves.
  6. Side seamsSew the side seams.
  7. UnderbandJoin the band into a ring, fold it over firm elastic and sew it to the lower edge in quarters, stretching the band to fit.
Fabricsize 40
  • 110 cm wide0.9 m
  • 140 cm wide0.9 m
  • 150 cm wide0.9 m

Estimated from the pieces laid out with seam allowance, grain along the selvedge. Add more for matching checks or stripes. The editor shows the layout.