Diana wore this full-length beaded gown with one sleeve for the gala premiere of Octopussy in London in 1983. The shape, the colour, and the heavy embellishment are all timeless, and we've seen a plethora of similar looks on the runway from designers like Elie Saab and Zuhair Murad in recent years. That clutch bag is also something that would look as chic now as it did 34 years ago when Diana carried it.