Shes been a slow but steady riser on the fashion charts. After being critiqued for playing it too safe,the Duchess of Cambridge,Kate Middleton,seems to have made noticeable changes to her wardrobe. The Queens Diamond Jubilee celebrations have been the right time to make her presence felt. Thirty-year-old Kate looked particularly resplendent in red,aboard the royal barge during the Thames Diamond Jubilee Pageant held earlier this month in London. The Duchess perked up the gloomy weather dressed in a vibrant scarlet Alexander McQueen dress and a matching headpiece by Sylvia Fletcher for royal milliner James Lock & Co. On her lapel,she wore a maritime-themed brooch featuring two silver dolphins and carried a scarf made of Strathearn Tartan,a nod to her Scottish title,the Countess of Strathearn. With the nude pumps,she nailed this look.