When it comes to clothes for warm weather resorts, it’s easy to think that one style fits all. The linen and cashmere sportswear that works for the summer season in Sagaponack can also do double duty for July in Nantucket or Santa Barbara, right? In many cases, yes, although the chicer the watering hole, the more nuanced the fashion. At many Euro hot spots like St.Tropez, Monte Carlo, Portofino and Marbella, the style game takes no vacation, regardless of how high the temperatures soar. All the more reason to take a look at the latest on-trend accessories that are guaranteed to ratchet up your fashion cred wherever you go.