Teo Flor. 2959 Piedmont Rd in Buckhead. Old school tailor can make you a bespoke suit or make simple alterations, and everything in between (aside from weaving). Been serving well-dressed Atlantans for a a very long time. Stockton in Midtown also has a very good tailor, and if you are a regular there they probably would make him available for non-Stockton items.