Strap keepers work in two ways .They prevent bra straps from peeping out of the neck and also prevent wide neck lines falling away.
Prepare fabric tubes from the fabric which was used to stitch the garment. The length of the fabric tube taken should be little more than the shoulder line of the garment. It should not be too long or short. Finish raw edges of the fabric tubes by turning them in. Sew the two halves of a press button one on each side of the fabric tube as shown in the figure. Fold the tube in the middle such that the two halves of the fastener face each other and stitch it to the seam of arm scye where the shoulder line is attached to the sleeve. If the length of the tube is too small there will be wrinkles on the shoulder. While wearing the garment one end of the strap is passed under the bra strap and the button is pressed together.
Interchangeable strap keepers
Take ¼” wide satin ribbon. Let the length of the ribbon be little more than the length of the shoulder line. Stitch the raw edges. Sew the two halves of press fastener one on each side. stitch the middle of the ribbon to the safety pin as shown in the figure. This can be used as a strap keeper by fixing the safety pin to the seam of the arm scye where the shoulder line and the sleeve meet.
