Alan and Judith Kilshaw yesterday lost their legal battle to keep the nine-month-old babies they said they legally adopted over the Internet.
A High Court judge made an order which will result in the twins being returned to Missouri, in the US, where they were born.
The private hearing in the Family Division was punctuated by outbursts from Mrs Kilshaw, 47.
She emerged from the courtroom flanked by High Court officials, screaming at gathered media representatives.
"There is no justice. They said I lied," she yelled.
As she struggled with the officials, she said: "You want everything don't you. My life and my kids."
Twenty minutes later she was again taken from the court, screaming abuse, and was led away by an official and her daughter, Kaley, 18.
Mrs Kilshaw returned to court, distraught and weeping to hear the final part of the judgement.
Mr Justice Kirkwood said in a statement that Belinda and Kimberley would be looked after by foster parents in the US pending a decision by a Missouri court as to what was in their best interests.
"The court held that it would not be in the welfare interests of the twins for them to be returned to Mr and Mrs Kilshaw," he said.
The couple, from Buckley, north Wales, who say they paid a US baby broker £8,200 to adopt the girls, began a legal battle with Flintshire Social Services in January when it took the girls into care.
The Kilshaws' lawyers said later the couple only wanted the best for the twins and were considering appealing.
Belinda and Kimberley, also the subject of a custody battle involving their natural mother and father, are being cared for by foster parents in north Wales.
A spokeswoman for Flintshire Social Services said: "These two little girls will return to the States but will take the very best love and good wishes of the people of Flintshire and indeed the people of Wales."
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