Brad Pitt and Angelina Jolie want to adopt, the couple already have six children but are reportedly keen to extend their family.
The couple have been talking with their six children - adopted trio Maddox, 12, Pax, 10, and Zahara, nine, and biological kids Shiloh, seven, and Knox and Vivienne, five - about welcoming another little girl into their family.
A source told Grazia magazine: ''Angelina and Brad have spent much of the festive period discussing extending their family.
''They've been open with the children about it and they are all excited at the prospect.''
The pair initially looked into adopting a child from Jordan, but the process was too difficult so they are instead believed to be speaking to orphanages in Ethiopia, the birthplace of their eldest daughter.
The source said: ''They have always wanted Zahara to have a sibling who shares her African heritage.
''Ideally they'd like a little girl aged between two and three.''
Brad and Angelina - who are seeking advice from friend and adoption expert Dr. Jane Aronson - are building an AIDS clinic in Zahara's name in Ethiopia and are expected to pay a visit in April, when they will also meet with orphanage bosses.
The source said: ''There is likely to be a visit to Ethiopia in the next few months to check on proceedings at the clinic. But they will visit orphanages at the same time. They hope to have everything in place to go ahead with the adoption around April.''