In
sewing and
tailoring,
facing is fabric applied to a garment edge, on the inside.
Shaped facings are cut to match the outside shape of the piece to provide a neat finish, and are often cut from the same
pattern pieces. Shaped facings are typically made of the same fabric as the garment, but may also be made of lighter-weight fabric or in a
contrasting color as a design element.
Extended facings are extensions of the garment fabric, folded back and usually stabilized.
Bias facings are strips of lightweight fabric cut on the
true bias (US) or cross-grain (UK), and shaped rather than cut to match the edge to which they are applied.