Trending now on social media worldwide.
Believe it or not, the colors of this dress are causing a hot debate on Tumblr, Twitter and even Facebook.
Some say the dress looks white and gold while others say the colors are blue and black.
It all started after a "Tumblr" user posted the photo posing the question "What colors are this dress?"
So, to get in on this social media craze, what do you think?
Black and blue or white and gold?