The Prince and Princess of Wales on the steps of St Peter's Basilica in Rome during a tour of Italy, April 1985. The Princess is wearing a dress by Donald Campbell. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
The Prince and Princess of Wales on the steps of St Peter's Basilica in Rome during a tour of Italy, April 1985. The Princess is wearing a dress by Donald Campbell. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)