Magdelena Luczak and Mariusz Krezolek denied murder
and blamed each other
The mother of Daniel Pelka and her partner have both been jailed for life.
Magdelena Luczak, 27, and Mariusz Krezolek, 34, were convicted of four-year-old Daniel's murder at Birmingham Crown Court on Wednesday.
Mrs Justice Cox said the sentence reflected the '"incomprehensible brutality by both of you up to his death".
She ordered that both must serve a minimum term of 30 years in jail before being considered for parole.
'Designed to humiliate'
Luczak, and Krezolek had denied murder and blamed each other.
The judge told the pair they had "caused [Daniel] severe physical and mental suffering".
Mrs Justice Cox said Daniel's punishments were "designed to humiliate" and that he was "a victim of chronic and systematic starvation".
The judge said the two had killed Daniel in a "campaign of cruelty".
Sentencing the pair Mrs Justice Cox said Daniel "must
have been absolutely terrified"
"Complicity in ill treatment started with a broken arm when he was just three and a half.
"What was handed out to Daniel was incomprehensible brutality by both of you," she told the pair.
He was also subjected to cold water punishment.
"We will never know exactly what form it took because you have not explained it - he must have been absolutely terrified," Mrs Justice Cox said.
The judge said the level of culpability of Luczak and Krezolek was "extremely high" and that there was "minimal mitigation in this case".
Stephen Linnehan, representing Luczak, told the court she had come "this country in search of a better life" and "has now lost everything".
Krezolek's barrister told the court he did not have the intention to kill and was "deeply ashamed" of his conduct [towards Daniel].
Daniel's death is the subject of a serious case review by Coventry's Safeguarding Children Board and a report is due to be published in the next six weeks.
The review will look at what was done by police and social services after staff at Daniel's school - Coventry Little Heath Primary School - noticed bruising on his neck and what appeared to be two black eyes.
Speaking to BBC News, Amy Weir, the independent chair of the board said: "Clearly there were failings in Daniel's case and the serious case review is looking at why systems that are in place were not used."