Back when there were no TSA and no electronic gates, and when traveling dressed meant underdressing only (In the 1970s) it still required the extra suit case and, sometimes, a one-hour motel rate in order to change before the flight. Add to that the fact that vests were worn with suits --- hiding the bra shape -- and that was pretty daring at least for me. Underdressed while opening new stores as manager or as head honcho in northern states and south. Recall one driving trip from Ohio to New Orleans when made a point of keeping all my male underclothes and sleepwear in a bag in trunk to make it difficult to switch in the event a big O got in the way. Wore cowboy boots so that the hosiery wasn't obvious --- daring then and so "No Big Deal" now but when one looks back --- yes, then it was big to me.
Julie