Princess Diana's Timeless Fashions Long Mermaid One Shoulder Sequined Front Slit Formal Prom Dresses with 27dress Elegant Red One Shoulder Prom Dress with Front Split Court Mermaid Sty Bridelily Princess Diana, in an off the shoulder evening dress, arrives at the Royal Opera House, London, for the Royal Charity Premiere of 'Ivan the Terrible' by the Bolshoi Ballet Stock Photo Alamy White One Shoulder Rhinestone Slit Prom Dress TCDFD8625