Kate, Duchess of Cambridge, talks with scouts as she attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013. The event celebrates the achievements of young people and young adults who have achieved the Queen's Scout award. This award is gained by carrying out regular community service for a year, learning new skills, completing a four day expedition in unknown terrain; taking part in a residential project and then sharing what has been learned with their peers.
Kate, Duchess of Cambridge, attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, left, walks with Chief Scout Bear Grylls, right, during the National Review of Queen's Scouts at Windsor Castle in Berkshire, England, on April 21, 2013.
Kate, Duchess of Cambridge, left, attends the National Review of Queen's Scouts at Windsor Castle in Berkshire, England, on April 21, 2013.
Kate, Duchess of Cambridge, left, attends the National Review of Queen's Scouts at Windsor Castle in Berkshire, England, on April 21, 2013.
Kate, Duchess of Cambridge, attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, meets with scouts as she attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, talks with Chief Scout Bear Grylls, second left, and Sea Scout Rob Butcher, second right, as she attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013, in Windsor, England.
Kate, Duchess of Cambridge, stands with Chief Scout Bear Grylls, right, as she watches a march past of several hundred scouts as she attends a national celebration for scouts who have achieved their Queen's Scout Awards at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, stands with Chief Scout Bear Grylls, right, as she watches a march past of several hundred scouts as she attends a national celebration for scouts who have achieved their Queen's Scout Awards at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, walks with Chief Scout Bear Grylls, right, as she attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, and Chief Scout Bear Grylls, right, talk with scouts as she attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, talks with scouts as she attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Kate, Duchess of Cambridge, second right, talks with participants during the National Review of Queen's Scouts at Windsor Castle in Berkshire, England, on April 21, 2013.
Kate, Duchess of Cambridge, attends the National Review of Queen's Scouts at Windsor Castle in Berkshire on April 21, 2013.