Reported cheater Angelina Jolie and her resident man-candy Brad Pitt have begun working on snagging a fifth child to join their always burgeoning Rainbow Tribe-this time the tyke will hail from Africa.

The pair hope that another adoption will firm up their relationship as well as help Zahara, the Ethiopian girl they adopted two years ago, feel more connected to the rest of the family.

“Brad and Angie have made no secret of the fact that they are keen to extend their rainbow family,” said a source close to the couple.

“But they’ve always been very careful to ensure that they leave enough time between kids so that each child fully integrates into the family and feels truly settled.”