Prince William and Kate Middleton continued their busy week with a royal appearance at the Imperial War Museum in London today. They attended a reception to launch the museum foundation's First World War Galleries with Kate donning a gray Amanda Wakeley dress for the occasion. It was Kate and Will's second outing of the day after honoring the Scott-Amundsen Centenary Race to the South Pole at another reception this morning. Kate wore a blue Rebecca Taylor look for the occasion, while Will suited up with a striped tie. The couple, who will celebrate their first wedding anniversary on Sunday, kicked off the string of events yesterday when they stepped out for the movie premiere of African Cats.