Replacing Worn-Out Lining
The lining in coats often wears out before the rest of it. Leather jackets especially will last much longer than their linings. Replace the lining before it has deteriorated to shreds.
Removing the Lining
Remove the old lining by carefully taking out the stitches. The right or left half will serve as your pattern for the new lining. Choose the side that is in the best shape, and take out the stitches on every dart and turned-under edge. If your lining is quilted or stuffed, this could get messy — all the more reason to replace the lining before it's gone completely to pieces.
Use your pieces to help you determine the amount of fabric you'll need. Buy good-quality suit or coat lining. This is a big enough job that you won't want to have to do it again too soon. If you choose rayon, iron it with a dry iron to avoid water spots.
Iron the pieces that will serve as your pattern. Make note of the amount of seam allowance remaining on the lining pieces. Lay out the pieces on your folded lining fabric. Cut carefully, adding where necessary if the edges are frayed. Mark any darts on the new pieces.
If your old lining had a pocket you don't want to give up, reconstruct it as close as you can to the way the old one was, using the pieces as your pattern. The construction of the welt pocket in Chapter 17 might help you with the details or as a substitute for the original pocket. You might want to use lighter-weight lining inside the pocket.
Reconstruct the lining by sewing the darts, seams, and sleeves. Turn under the outside edges. Slip the lining sleeves into the jacket sleeves, and blind-stitch around the lining's outside edge. Rehem the lower edge and the sleeves.
If you have a favorite garment that fit perfectly but has worn out, take it apart and use it as a pattern for a new one. Take into account the effect fabric has on the appearance and fit of a garment, and try to find fabric close to what your original garment was made of.