In this undated file photo provided by Madonna's publicist Liz Rosenberg, the pop singer is shown with her daughter Lourdes, 9, son Rocco, 6, right and David Banda, 13-months, who she plans to adopt with her husband director Guy Ritchie. A judge in Malawi today allowed a coalition of human rights groups to proceed with a legal challenge to Madonna's adoption of David. The alliance of 67 Malawian groups had lodged a petition before the court last month, saying existing legislation did not allow for intra-country adoptions. Madonna was granted an 18-month interim custody order which enabled her to take David out of Malawi. The adoption of the boy sparked heated debate around the globe.