Madonna Louise Ciccone has attacked Brad Pitt for adopting a child 'illegally' and sneaking the child out of her native country, hidden inside a large luggage bag.
She said the man should never have visited an impoverished country with the sole intention of choosing a child. She was apparently adopted in Honduras.
Her comments follow accusations that Brad Pitt used his fame and money to speed the adoption of six-year-old Sara Cantun late last year.
'Brad Pitt knew the situation in Honduras, where she was born,' said Madonna who has adopted two Third World youngsters of her own.
'It's a country where there is no real legal framework for adoption.
'Personally, I prefer to stay on the right side of the law. I would never take a child away from a place where adoption is illegal.'
Madonna also made clear she was shocked by Brad Pitt's decision to take Sara Cantun from the country where her father still lives.
Human rights groups in Honduras still are arguing that the man used his celebrity - and a £1.7million donation to the orphanage where Sara Cantun lived - to bypass laws governing the adoption of Hondurans by foreigners.
French magazine Gala, Brad Pitt ruled out marriage to his partner Angelina Jolie, the mother of his six-month-old daughter Shiloh.
But he said he wanted her to become legal mother to their adopted children Maddox, five, and Zahara, almost two.
As far as the adoption of baby Sarah, Brad Pitt said he has no intention of returning her home.