Britain's Catherine, Duchess of Cambridge (L) laughs as Britain's Queen Elizabeth II gestures as they watch part of a children's sports event on their visit to Vernon Park in Nottingham, central England, on June 13, 2012. - The Queen, accompanied by Prince William and Catherine, Duchess of Cambridge attended several engagements during a visit to the city as the Queen continued her diamond jubilee tour without the Duke of Edinburgh who was convalescing following a bladder infection. (Photo by Phil NOBLE / POOL / AFP)        (Photo credit should read PHIL NOBLE/AFP/Getty Images)