If you want to give your brain a challenge today, trying to figure out this optical illusion might be just the thing you need.
A drawing by the Ukrainian artist Oleg Shupliak might look like it only consists of one woman at first glance - but in fact, there's four women hiding in this drawing.
And apparently only two percent of people can manage to locate all four of them, so have a look over the whole drawing below and see if you're up to the challenge.
