Viral: People find difficult to judge colour of outfit in this pic

Two years ago 'black and blue' or 'white and gold' dress combination confused people and now a tank top and shorts combo posted on Facebook is creating similar confusion for people. It gets really tricky to find out what exactly is the colour combination of the dress.

Some see it as grey and blue-green and others as pink and white.

A photo posted to Facebook on July 3 by Rachel Stewart has collected over 1,000 shares and 700 comments as the debate of what colour the outfit is rages on.