Allegedly previous presidents Â (from Kennedy onwards) wore Southwick suits and Johnston and Murphy shoes. I have no idea who Colin Powell is dressed by.
President Clinton had some Zegnas as well towards the end. Not a bad evolution from someone who started buying his suits off the rack at Dillard's. And Carter, I don't think he ever put too much thought into what he wore, to be honest. In a lot of pictures, he's wearing the exact same blue suit. As for other world leaders who often look excellent, UN Sec-Gen Kofi Annan is a Chester Barrie, KFS, and Kiton devotee, and Nelson Mandela often wears Brioni. Peace, JG