NEW YORK — Here’s to the young Ladies Who Lunch. After all, there’s a whole new social generation, and designers are accommodating them with a fresh and quirky crop of suits for fall. Graphically patterned tweeds and the flirtiest of details are the season’s hallmarks. Here, Delphine’s wool and polyamide version, worn with Dennis Basso’s fox collar and photographed at the Maison de Fleur. For more suits, see today’s photo spread, “Quite Suitable.” For more furs, see today’s special section, WWDFur In Depth.