A formal men's tuxedo vest is extremely expensive. Although necessary, the added expense may seem quite the burden for such a simple design. As an alternative, you may want to consider making the vest yourself, which will not only be educational but far less expensive. The trick to doing so is to pay exact attention to all details. Any mistakes will surely be noticed for a formal garment.
Purchase about 2 yards of formal apparel fabric. You may need to browse an online store rather than visit a store in person as you want to give yourself more options.
Place an old non-stretch shirt over the purchased fabric.
Use chalk to trace your shirt over the fabric. Indicate with a line where the sides and bottom of the shirt is.
Rotate the shirt over and repeat step 3.
Use chalk to trace where the sleeves met the body of the shirt and mark with a double line.
On the front part of the shirt, create a "V" slit towards the neck and subsequently follow it down along the center.
Cut each piece of your pattern by leaving 2" along the sides and 1" along every other double line. Take care to cut away the sleeves.
Sew the sides of each pattern to one another. Leave as much space as possible to give the tuxedo ample space to close.
Hem every other exposed area by folding the extra inch inside and sewing over the fold.
Sew at least three buttons along the left side of the vertical opening in the front. Parallel to these buttons, the right side should have cut slits that are securely sewn as well (sew repeatedly along the cut to create an appearance of embroidered openings.
Measure the individuals waist to be sure the vest fits their measurements. If the vest is too small, loosen the side hems. If the vest is too large, tighten the side hems.