Catherine, Duchess of Cambridge and &lt;a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Prince+William&amp;family=editorial&amp;specificpeople=178205 ng-click='$event.stopPropagation()'&gt;Prince William&lt;/a&gt;, Duke of Cambridge attend the Irish Guards St Patricks Day Parade on March 17, 2013 in Aldershot, England.