On casual days I often just wear dress pants, white shirt and tie and a vest. Someone recently scolded me for doing all my buttons on my vest. He said, "You never do up the bottom button on a vest!" This was news to me. An undone button seems so...so...undone. I thought to myself, how uncouth. That would be like leaving the top button of a dress shirt undone. I mean...really.
Do you button all your vest buttons?
They're correct and you do not wear a vest without a jacket.