Worn by Princess Margaret at a film premier in London in 1951. This glamorous party frock, (plunging halter-neck design) marked a departure from the demure style traditionally adopted by Royal women. More Hollywood glamour than Royal wardrobe, its risque nature was widely reported by the press who were even more excited to find the Princess smoking a cigarette while wearing it. Historic Royal Palaces © Lord Linley and Lady Sarah Chatto.