white and gold dress or black and blue 10 years ago today, this was posted online, turning into a viral phenomenon. Viewers couldn't decide if the dress was black, gold. It was later confirmed Origin of White Gold or

One side of the dress with a long sleeve is layered on the other and is tied with a wide ribbon at the waist

Simply put, objects appear the same colour even if the light illuminating them changes a concept known as colour constancy

The image has become an online sensation, with posts arguing over the dress's original colours - and science behind the debate - being viewed and shared millions of times

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However, following the viral Tumblr post, Roman Originals saw an unprecedented spike in website traffic, leading to the dress selling out in just 30 minutes

This matters because it implies artificial or natural light