"Amal is said to be a little more than three months along," the insider spills.
"She really tried to stay out of the spotlight during the first few months of her pregnancy. But, now that she could be in her second trimester, she's enjoying getting out more. "
George and Amal are already parents to 18-month old twins Ella and Alexander.
When George and Amal found out they were going to be parents again, "they were overjoyed," says the insider, noting they were even more excited to learn it was twins again.
"They went through a bit of a rough patch earlier this year, especially after George's accident in July. Now they're closer than ever."
The Clooney's are yet to respond to OK USA!'s report.