"Iron Man 2" premiere because she was en route to the African country to pick up her daughter, Fenan, who is 19 to 20 months old. (Johansson also has a older brother, Adrian, a twin brother, Hunter, and an older half-brother, Christian, from her father's first marriage.)
Sloan was stranded in Germany for several days while traveling to Ethiopia because of the volcano ash cloud."The volcano put the whole adoption process in jeopardy due to time constraints," a source tells Us. "But it worked out in the end."
A rep for Johansson, 25, had no comment. The actress and husband Ryan Reynolds, 33, may soon be following in Sloan's footsteps.
"I have every intention of adopting at some time," Reynolds -- whose older brother is adopted -- told UK Glamour last summer. "I'm very grateful for having my brother in my life. I couldn't be more pro-adoption. There are plenty of kids in the world that need it."
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