Jenitar and Jortham Na-amoana have welcomed identical quadruplets - Emily, Harriet, Alexa and Catherine - who have been born at the Royal Brisbane and Women’s Hospital

Jenitar Sau Na’amoana, 34, was raising four young children and had not planned to have another when she naturally fell pregnant.

It's being considered one of the rarest births in the world, a Brisbane mother delivering identical quadruplet girls who were naturally conceived.