ROUGH CUT - NO REPORTER NARRATION<br/> <br />The Duke and Duchess of Cambridge spent day four of their Australian tour in Queensland, visiting a Royal Australian Air Force Base (RAAF) and attending a State Reception in Brisbane.<br/> <br />The royals were welcomed at Amberley RAAF Base on Saturday (April 19) by Australian Defence Force Chief, General David Hurley and were shown an F/A-18F Super Hornet aircraft.<br/> <br />The duchess wore a white dress with a blue pattern by British fashion house LKBennett and carried a bag by Australian designer Oroton, local media reported.<br/> <br />She also joined her husband for a trip in a Super Hornet simulator, according to their instructor Flight Lieutenant (Flt Lt) Jasper McCaldin.<br/> <br />The young royals planted a Plunkett Mallee tree, or Eucalyptus Curtisii, in a memorial garden and met the families of service personnel killed in recent conflicts at a lunchtime reception.<br/> <br />In the afternoon the royal couple attended a reception at the Brisbane Convention C
