The longtime couple and parents of six exchanged vows in a secret ceremony in France last week, reported Us magazine.
"How great is that?! I'm really happy for Brad and Angie and their whole family," Clooney said.
The ceremony was held at their Chateau Miraval estate in France, and included a small group of close family members and friends.
The wedding precedes Clooney's own upcoming nuptials to his fiancee, Amal Alamuddin.