Tank top by Calvin Klein Underwear
Loafers by Tommy Hilfiger
Cue the short-sleeve button-front shirt, now more fitted—and in more killer colors, patterns, styles, and price points—than ever. Sure, these things used to be the workaday uniform for rocket scientists and schoolboys. But they also channel Elvis (both Costello's nerdy cool and the King's sex appeal) and can work with shorts or jeans or a suit or even swim trunks.
White jeans by Simon Miller
Belt by J.Crew
Vintage bracelet by Kaufman's Army & Navy