Appliqué is a decorative technique in sewing where one piece of fabric is sewn onto another to create designs or patterns. This method can be used on various textiles, including clothing, quilts, and home décor items. The edges of the fabric pieces are often stitched down to prevent fraying and to enhance the design. This technique can involve different stitching styles, such as zigzag or straight stitches, and can be done by hand or machine. Appliqué is popular in quilting, where it adds texture and visual interest, and can be combined with other techniques like embroidery for more intricate designs.