World's longest-surviving octuplets speak publicly for the first time as they defend their controversial single mother who gave birth to them using IVF despite already having six other children at home - before turning to porn and rehab to cope

Natalie 'Nadya' Denise Suleman, 50, from Fullerton, California , became famous in 2009 for welcoming eight babies at once using IVF after her physician implanted 12 embryos in her womb.