If you’re not familiar with #TheDress (and in which case, have you been living under a rock over the past year?), it was basically a confusing phenomenon, as some people saw the dress as being white and gold and others saw it as being blue and black.

As it turns out, the dress was blue and black – and a theory that we shared last year explained why we saw anything different.

A study by Dr Pascal revealed that those who saw the dress in gold and white were seeing the dress in a shadow – while those that saw it in light saw it as being blue and black.

He said: ‘Shadows are blue, so we mentally subtract the blue light in order to view the image, which then appears in bright colours – gold and white.