It's a snap just like any other you'll see in your Instagram news fee. A woman poses cheekily biting the end of her finger while gazing down the lens.
The image is actually from as far back as 2003 , but it's gone viral again recently. Why? Because eagle-eyed people have spotted something quite odd about it.
It's not obvious at first glance, but look closely...
Yes, she appears to have an extra finger - and she's even drawing attention to it.
Is it natural or Photoshopped? Nobody seems to know.