For years, strapless wedding gowns have ruled the salon scene. No longer. Almost as soon as Kate debuted her Sarah Burton for Alexander McQueen gown, says Dan Rentillo, fashion director for David's Bridal, dresses in a similar style began rocketing off the racks. "Women have really responded to the coverage," says Rentillo. "They're asking for ladylike gowns with clean, simple lines." Some brides are taking it even further by requesting a replica of The Dress: By midsummer, several houses, including Justin Alexander, Mori Lee, Theia, and David's Bridal, were selling lacy look-alikes.