Last night saw Kate Middleton wearing an exquisite, one sleeved, silver evening gown by Jenny Packham  as she co-hosted a dinner to raise funds for the National Memorial Arboretum Appeal. The stunning Grecian style gown, with one  loose sleeve and a tie waisted belt, was a departure for Kate in terms of colour and style. Jenny Packham  is a real  really good choice for Kate with her classic,elegant evening wear, and this dress was just so  beautiful, with the metallic tone really suiting Kate’s colouring. Kate’s dress is long and flowing, and I can’t find it on the Jenny Packham website,but there is a shorter version that looks very similar…