President of Italian Republic Giovanni Gronchi and his wife Carla Bissatini talking with Rainier III (Rainier Louis Henri Maxence Bertrand Grimaldi), Prince of Monaco, and his wife, American actress and princess Grace Kelly, during a gala at Quirinal Palace. Rome, June 1959 (Photo by Pierluigi Praturlon\Reporters Associati & Archivi\Mondadori via Getty Images)
