We often think that it's the visuals that need the maintenance. A skirt hem, a worn cuff or collar. But in truth it's the invisible part of the garment that gets the most wear that requires the most tending.
One of my vintage acquaintances came to me with some thrift store finds. These mid to late 60s coats with utterly trashed linings. She set them out and showed me the damage. Popped seams, shredded armholes,fabric tears, raw seams, you name it. They were not pretty, but the good news is they didn't have to be. She only wanted the linings wearable, because she was safety pinning them just to get by and it wasn't working anymore.