Kate Middleton Waved Her Little Union Jack Flag With Gusto

LONDON - MAY 04:  (L-R) Princess Beatrice, Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge and Prince Harry are seen during the Diamond Jubilee, Buckingham Palace Concert May 04, 2012 in London, England. For only the second ime in it's history, the UK celebrates the Diamond Jubilee of a monarch. Her Majesty Queen Elizabeth II celebrates the 60th anniversary of her ascension to the throne. (Photo by Dave Thompson - WPA Pool/Getty Images)
Photo: WPA Pool/Getty Images

Kate Middleton joined her fellow Royals (in the appropriately named Royal Box) to watch a special concert in honor of Queen Elizabeth's Diamond Jubilee at Buckingham Palace this evening. Wearing a navy blazer and a blue floral-patterned dress, she waved a novelty flag along to performances by musicians including Paul McCartney, Grace Jones, and Kylie Minogue. See part of Kate's outfit, as well as her other looks from recent Jubilee celebrations, in our Kate Middleton Look Book.