What is a shaped piece of fabric used to finish the raw edge of a garment called?

The term "facing" refers to a shaped piece of fabric that is used to finish the raw edges of a garment, particularly around necklines, armholes, and other areas that need a clean and secure edge. By applying facing, designers and seamstresses ensure that these edges do not fray and provide a polished look to the garment. Facing can also offer additional support and structure, enhancing the overall fit.

Bias tape is a long, narrow strip of fabric that is typically cut on the bias and is often used to finish edges or make bindings. While it is related to garment construction, its purpose and application differ from that of facing. Binding refers to a type of trim that is often used to encase raw edges but is not shaped in the same way as facing. A seam involves joining two pieces of fabric together, rather than specifically finishing an edge. Each of these options serves distinct purposes in sewing and garment making, which clarifies why facing is the correct answer in this context.