If the internet is good for anything, brainteasers and optical illusions are at the top of that list. Today's optical illusion comes to us from Imgur and asks you to simply find the little girl in the purple hoodie amongst huge rocky boulders.
Sounds easy, right? Think again.
This puzzle has stumped hundreds of thousands. Can you spot her? Take a look below to give it a go.
Think you've spotted the little girl? How can you miss her? She's waving right at you. Click through to the next page for the big reveal.