Now seven, the girls live completely different lifestyles with one living overseas and attending an international private school and the other receiving state primary education and living with her new family in a terraced house in England.
The case has similarities to that of Gammy, a Down’s syndrome baby born to a Thai surrogate.
The child was at the centre of an international outcry after his Australian parents were accused of leaving him in Thailand with his surrogate mother Pattaramon Chanbua, 21, and taking home the healthy twin.
The couple, David and Wendy Farnell later denied this was the case insisting that the Thai mother would not hand over Gammy and have said they want to get the seven-month-old baby back.