"I haven't spoken to her since I've heard that. I think that's a great idea," Pitt told People magazine Tuesday night at the New York premiere of his new film, "The Assassination of Jesse James by the Coward Robert Ford."
"She's a great mother. She graced our film, came in and did a really lovely part for us," added Pitt, himself a father of four children -- three of whom are adopted. "She had her little boy out and she was a really lovely mother."
Parker, who can also be seen in the Showtime series, "Weeds," confirmed the adoption to People Monday.
The actress also has a 3-year-old son, Will, with actor and former boyfriend, Billy Crudup.
Parker was the final cast member to arrive at the "Jesse James" premiere. She posed for photos, but did not stop to talk to reporters, People said.