Article continues below advertisementNicole Kidman and Keith Urban's divorce arrangements are shaping up to be anything but ordinary.According to Gideon Alper, estate and family attorney at Alper Law, the couple's legal decisions thus far make them "practically a unicorn" when it comes to celebrity divorces.The actress, 58, requested primary custody of her daughters, Sunday Rose, 17, and Faith Margaret, 14, and waived child support.Article continues below advertisementSource: MEGANicole Kidman filed for divorce from Keith Urban.