When sewing with woven fabrics there are times when a seam just wants to stretch out and won't stay put....now keep that word "stay" in mind while I explain...
Today I am making the lovely and fashionable Fifth Avenue dress pattern
and because the fabric is a bit thick, to keep down the bulk I decided to use organza in place of the traditional interfacing the pattern calls for.
With Organza being an actual woven fabric, that little dip in the sweetheart neck was going to be prone to stretching, so I used a "stay" to stabilize that portion of the neck. This method can be used any place you want to prevent stretching on any seam, such as shoulders, waist line, necklines, pockets, and can even ease in a seam that has already stretched.
Have a wonderful sewing day!