New Yorker article on the author's experiment in having a jacket copied. The original was made by David Taub of Gieves & Hawkes.
"Among the interesting things about Savile Row is that the people who work there have complete confidence that what they do is genuinely different and better than what other people can do. They appear to invite scrutiny, arguing that when their work is examined, it will be found admirable. Not only did Taub say yes [to the copying], he also offered to give me a garment, so that it could be taken apart and so that the tailor who was trying to reproduce it would have the best possible information. His reasoning was that something made by Gieves & Hawkes could be taken apart but not put back together again in as lovely a form. Many of the decisions that go into making a garment what it is—how tightly a piece of cloth is pinched when it is sewn, or what angle the needle enters at—leave no trace except in the result."
"I asked him what faults he was finding in the jacket. He hesitated, but I pressed him. He then explained that the stitching around the buttonholes was very rough, and that this is such a basic mistake that it even has a name: the squashed bug."
Here is Taub's blog.