This reminds me of how everybody in the first class section aboard the Lusitania on May 1, 1915 just naturally dressed up. Since World War I was not over, women's fashion hadn't yet been revolutionized in the Roaring 20's, ladies still dressed in accordance with Edwardian norms. No woman would dare to show her legs in public!
But look what happened to all the fancy ladies and gents on the Lusitania! When the torpedo hit, many of them had to jump into the water and get all those expensive clothes wet. The lucky ones found lifeboats. The others had to cling to planks for hours. I bet they never wore fancy clothes on cruise ships again.