Getty Prince William and Princess Catherine are hosting their first garden party of the year! The Duke and Duchess welcomed thousands to a garden party on Friday afternoon (May 8) held on the lawn of Buckingham Palace in London, England. Credit: Getty For the event, Kate, 44, wore a structured white jacket with a long coordinating polka dot dress by Self-Portrait paired with a black and white hat. William, 43, sported a traditional English morning suit paired with a top hat.