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Known more colloquially as the vase-face optical illusion, Rubin's vase can be seen as the black profiles of two faces looking at each other or as a white vase, but not both at the same time

The British company that created the dress, Roman Originals, says the dress sold out by Friday morning, with about 300 selling in the first half hour of the debate

The backless and sleeveless design offers a modern, daring silhouette perfect for warm weather and special occasions

The waist should be a little slimmer than the rest of the jacket, fit near to your body, and be able to comfortably allow the top button to close