Create the pattern. Lay the bra on a flat surface

It is almost inevitable that as time passes, the fabrics in clothes begin to deteriorate. This is especially true of bras. The more you wear and wash them, the faster they fall apart. Arguably the worst part in the process occurs when the underwire rips through the fabric and starts poking out. Though there's no way to stop the wires from one day ripping through the fabric, but there are ways to repair bras and extend their life span.

Visit a Nordstrom’s store if you have one in or near your community. You can find a bra fitting specialist in the Intimate Apparel section of the store.

Find the bra fitting specialist, and ask her to fit you for the size of bra you should be wearing. She will go with you into a dressing room and take your measurements. You can be measured over your clothing, but make sure it isn’t bulky.

Calculate your bra size by subtracting your band measurement from your cup measurement. For each inch in difference, the cup goes up by one size. For instance, if the difference is 0 to 1/2 inch, your standard cup size is AA; if the difference is 1/2 to 1 inch, your standard cup size is A; if the difference is 2 inches, your standard cup size is B; if the difference is 3 inches, your standard cup size is C; and if the difference is 4 inches, your standard cup size is D.

Go to a department store where there are a variety of bra styles and fabrics to make your selection.

Create the pattern. Lay the cheap sexy lingerie on a flat surface. Measure each piece and transfer the shape to a piece of paper. You can also disassemble one cup of the bra and use the pieces as your pattern. If you are using a commercial pattern, select the right size, and cut out the appropriate pieces.

Cut out the bra. Lay your lingerie fabric on a table or other flat surface. Pin the bra pattern pieces to the fabric. Add 1/4-inch seam allowance around each one, and cut out each piece. You will need two copies of each piece–one for the left side of the bra and one for the right. For lined bras, cut four copies. Large-busted women may wish to partially or fully reinforce their bras with a firmer fabric.

Place the bra that you plan on wearing with the dress face down on a flat surface. Close the bra by attaching the appropriate clasp.

Make two marks on the right and left side of the bra's built-in clasp. Make two more marks, one on the right of the first right mark and the other to the left of the first left mark, spacing these marks an inch apart.