A garment with this defect appears satisfactory until the arm is raised; then the side of the garment lifts and the sleeve feels tight across the top arm.
Correction of this fault is simple if there are wide seam allowances at the base of the armhole, since all that is needed is to raise the lower part of the armhole, joining it to the original curve at the front and back balance point (diagrams 1 & 2, line A-B).
The alternative is to make pleats in the patterns on the front and back width lines. This lowers the neck and shoulder lines and thus reduces the depth of the armhole, but it also reduces the length to the waist.
This method creates far more work than the first method, and if there is any doubt about the depth of armhole required, it is advisable to leave extra seam allowances at the base of the armhole.
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