Princess Margaret, wearing a crinoline evening gown slashed with the Ribbon of the Garter and the Cartier Halo Tiara, arrives at the Sultan of Zanzibar's Royal Palace during her East African Tour. (Photo by PA Images via Getty Images)
Princess Margaret, wearing a crinoline evening gown slashed with the Ribbon of the Garter and the Cartier Halo Tiara, arrives at the Sultan of Zanzibar's Royal Palace during her East African Tour. (Photo by PA Images via Getty Images)
