It was the question that divided the internet earlier this year as people were confronted with a magical color changing dress that seemed to be white and gold to some and blue and black to others.
Now the internet is ablaze with what seems to be a multi-hued cake that changes color depending on the angle it's viewed from.
Baker CharlotteSometime shows a cake that morphs from blue, green and purple to orange, yellow and pink.
Charlotte, who appears work in the bakery at Karsch's Village Market, US, is shown spinning the cake on a rotating stand, where it swiftly changes colours.
The chameleon cake has divided the opinion of commenters, some who claim that it's a fake whilst others have attempted to explain the technique to create the illusion.