Neev and Nelly are craniopagus conjoined twins born with their cranium fused together,
they are attached at the back of their heads.
With only 6% of conjoined twins being craniopagus they are the rarest kind in the world.
Now living in the Netherlands the twins started out life in very different circumstances
On investigation, it was discovered the twins share an important vein in their head.
Which makes it impossible to separate them.
Now 18 the twins have learned to adapt to their condition with just a few frustrations.
Having put up with the looks for this long Neev and Nelly decided to take back control
and started their own YouTube channel.