Cover Story: Brad & Angelina Adopting a Boy!

Even though Angelina Jolie and Brad Pitt are about to welcome their twin girls into the world at any moment now, OK! has learned that's not stopping them from making plans to add yet another child to their "soccer team" of a family — a baby boy from Ethiopia.

"Angie and Brad have wanted an African boy for the last couple of years," an insider tells OK!. "They were initially going to have that adoption follow the addition of Pax last year, but that all changed when Angie got pregnant with twins last fall."

Angelina even managed to rub some of her humanitarian spirit off on Brad's sister, Julie Neal Pitt. When Julie was looking to adopt, the actress directed her to the same African orphanage where she'd found Zahara in 2005. And, according to sources, the two had planned to adopt together at the same time.

"Angelina was pretty far along in the process of adopting a beautiful baby that captured the couple's heart when she and Brad got the surprise of their life and found out they were expecting," the insider reveals.

For the entire story on Brad and Angelina's adoption plans, pick up the new OK! — on sale everywhere Thursday!