NEW YORK — Go West, young man — or rather, young lady. When Horace Greeley first pronounced his famous words 150 years ago, it’s a safe bet he didn’t have evening dresses in mind. This season, however, Tom Ford is exploring the American West for Gucci, adding, he says, a “touch of Brooke Shields.” The result: those time-honored bandanna prints reworked into shirts, swimsuit coverups and the sexiest evening dresses imaginable. Here, the silk stunner, all tied up in knots. For more on Gucci Group resort, see photospread Jump.