Pattern instructions routinely tell sewers to clip or notch seam allowances along curved edges and at corners. It's wise to remove bulk in these areas, so garment edges can hug curved areas, such as around necklines and armholes, or remain flat in flat areas, such as at collar points. However, the typical method of clipping a 5/8-inch-wide seam allowance to the seamline can result in a misshapen edge.
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