Kate dons vibrant red for Diamond Jubilee (CBS News) Catherine, Duchess of Cambridge, stepped out in a striking Alexander McQueen dress to celebrate the 60th anniversary of Queen Elizabeth II on the River Thames in London Sunday. Pictures: Queen off to the races for Diamond Jubilee Pictures: Diamond Jubilee preparations Queen Elizabeth II's Diamond Jubilee: Calendar of events Complete coverage: The Queen's Diamond Jubilee Pictures: Kate, Duchess of Cambridge She wore a small, high red hat featuring flower cutouts and a long, form-fitting boat-neck top with a knee-length pleated skirt. She finished the look with a plush red bag and carried a plaid scarf. 12 Photos Queen's Jubilee: Fashion of the flotilla View the Full Gallery  The look was in stark contrast to the queen's and Camilla, Duchess of Cornwall's all-white dress for the event. Check out all the fashions from the River Thames flotilla.