Domenico Dolce and Stefano Gabbana served up a D&G collection as uncomplicated and pleasant as a picnic on the grass. Models, shod in canvas slip-ons and toting groceries, trod down a verdant lawn. Ginghams of varying scale and vintage vacation prints harked back to happy childhoods and Fifties suburban dads. Roomy pleated pants all came rolled up and a little distressed. Pastel evening jackets were the only precious items, and even they went along with washed whites that begged for grass stains.