Blame it on our rekindled romance with the British monarchy, but this season, expect a major heritage trend. Plaid, tweed and tartan, as well as a palette including mustard, ‘petrol’ blue and burgundy, got a great deal of attention on the catwalks. It looks like designers agree: it’s cool to be posh. Keep this regal look modern with a generous helping of wit, the British way: oversized bows, tongue-in-cheek equestrian flourishes, and a devil-may-care attitude. They’ll be calling you the Duchess in no time.