What you’ll need:
a strapless bra in your size
the straps that are included with the bra and 1 extra strap (or a piece of elastic)
needle and thread (or sewing machine)
First cut off the back of the bra, starting 1/2 inch after the side boning. Using the back piece you just cut as a template, measure and cut the straps to length plus 1/2 inch. Lay the bra face down and pin the straps onto one side of the boning. Stitch the straps straight down on one side. Pin the straps on the other side and try it on. You want it to be snug but you also need to be able to get it off and on. Once you are happy with the placement of the straps, stitch down the other side. Cut off any excess fabric and rock your backless tops with pride!