'I refuse to let my baby's birth mark define her'

Baby Charlie Crenshaw may only be eight months old - but her unique birthmark has already made her an internet star.

The tot's bright blue eyes, button nose and adorable outfits make for the perfect Instagram snap, but it is the birthmark on her face that receives the most attention.

But not all of the attention is nice and her mum, Katie, is hitting back - as this video shows.

See also: JK Rowling fan has baby with Harry Potter birthmark