The two sisters convicted of the manslaughter and murder of Farah Swaleh Noor in March of last year have been sentenced at the Central Criminal Court.
Charlotte Mulhall, 23, from Kilclare Gardens in Tallaght, who was found guilty of murder, has been given the mandatory life sentence, to be dated from 26 September.
Her sister, 31-year-old Linda Mulhall, of the same address, was given a 15-year sentence for the manslaughter of Mr Noor.
In sentencing, Mr Justice Paul Carney, said that this was the most grotesque case of killing that had occurred during his professional life.
Leave to appeal was refused for both sentences.