(CNN)First lady Melania Trump exited Air Force One Sunday in Tokyo, Japan, dressed smartly in a coat by Italian fashion house, Fendi, a leather pencil skirt by her frequent couturier, Hervé Pierre, and her ubiquitous sky-high Manolo Blahnik heels. The first lady, accompanying her husband President Donald Trump on his first official trip to Asia, will again have her turn in the spotlight, due in part to a familiar phrase: "What is she wearing?" That "she" being the first lady of the United States, be her Laura Bush, Michelle Obama, and now, Melania Trump. Like it or not, how the...