18 more optical illusions that will make your head explode

White Gold Blue Black Dress

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What color is this dress?

The world's most famous dress sent the internet into a hyperactive state overnight.

Debates about whether it is white-gold or blue-black have raged, the two women behind the fateful image have been found, and you can now buy the item if you want.

But this picture is just one in a long line of optical illusions that play with our mindsAdvertisement