Remember when Zelensky used to wear a suit to the White House? He actually looks respectable (circa the "perfect phone call" time)!
During WWII, Stalin and Churchill wore their dress uniforms (not sand-colored tee-shirts, like Zelensky does, as if he were coming from the trenches in the field) to meetings with President Roosevelt - who, as a civilian, wore a suit.
https://www.alamy.com/stock-photo-events-second-world-war-wwii-conferences-tehran-conference-28111943-19748446.html