Kate Stunning in silver London - Arabstoday   Amidst pregnancy rumors, Duchess Kate stepped out in a loose-fitting, floor-length chiffon satin asymmetric gown by British designer Jenny Packham. Prince William and his wife, 29, attended a benefit dinner for the National Memorial Arboretum Appeal at St. James\' Palace in London. Around 120 guests joined the couple for a black tie reception and three-course meal marking a cause close to William\'s heart – the National Memorial Arboretum (NMA) Appeal.  Kate was stunning in a satin and chiffon asymmetric bespoke gown by Jenny Packham. The event took place shortly after the announcement that the couple are facing a period of separation early next year when William is posted to the Falkland Islands for six weeks.