It's the question that's splitting homes and offices across the globe - is the dress blue and black or white and gold?

A seemingly innocuous photo of a dress has been posted on Tumblr with the caption: "Guys please help me—is this dress white and gold, or blue and black? Me and my friends can't agree and we are freaking the f**k out."

But the question has led to debates across the world. The News Shopper office is split on the subject, but what do you think?

Rather excitingly, the New Scientist claims to have solved the mystery of why we're seeing something different.

Even more excitingly, you can buy the dress here. It's blue and black.