Origin of button-down
Examples from the Web for button-down
She often dressed casually in button-down shirts, sweaters, and skinny jeans.
They are neither formal nor distant, the button-down shirts open at the collar signaling vulnerability rather than posturing.
Mitt will give a pitch-perfect, button-down speech accepting the GOP nomination Thursday night.What If Mitt Romney Said What He Really Thought Thursday Night|Matt Latimer|August 30, 2012|DAILY BEAST