We followed Kathryn Sargent, the first female master tailor on Savile Row, to find out how she crafts a bespoke suit — and to learn what makes Savile Row suits so expensive. More from So ...

What is considered a cheap suit? Lining. If the suit is made from polyester, you can identify it as a cheap suit. Quality suits have linings made of viscose (a less expensive material), silk (a higher ...