We hear Barneys New York might have some very special visitors this fall: Mary Kate and Ashley Olsen! The super twins are in talks with the super store for a PA - that's personal appearance - on behalf of their line, The Row. If they make it, they won't be the first sisters to hold court at a much-hyped store: Sienna and Savannah Miller launched their line, Twenty8Twelve, at Bergdorf Goodman during Fashion Week last year, and Paris and Nicky Hilton teamed up a few years ago to launch some Tinkerbell outfits for Fred Segal. And of course, Laura and Kate Mulleavy have made quite a few appearances on behalf of their own collection, Rodarte. Does this mean Hilary and Hayley Duff will be at Bendels by Spring '09?