Whip Stitch
Whip Stitch along the edge
One of the more common uses of the whip stitch when making clothes by hand is to use it to finish a raw edge. Using this stitching along the edges of cut cloth can reduce the likelihood of the edges fraying over time. It is, however, not the most attractive stitch so it is recommended that you only use it on the interiors of things rather than the exterior as it does not have the tidiness of other treatments.
Whipping a seam allowance open or securing a facing
There are many ways to secure a seam allowance open, but the most basic is to use the whip stitch. If it is done carefully and with focus, the stitches can be made very regular. If they show on the outside of the garment, as is common in shirts and other single-layer garments, the stitches can showcase the skill of the maker by their visibility
Whipping a seam together.
There exists a simple method of assembling main pieces of a garment by using a whip stitch. First, pieces are made, finished and line with their edges, even construction seam edges, turn inward and hemmed in place. Linings are then put in place and hemmed back from the finish line. Once the main panels are finished, they are then whipped together, from the inside, very tightly and with stitches very close together.