"Yes, they have adopted a baby," publicist Jill Fritzo told "ET Canada," giving no further details. The show's website, without attribution, said the child is a girl.
In September 2009, Heigl and Kelley adopted a South Korean baby girl they named Nancy Leigh -- after Heigl's mother and sister, respectively -- and nicknamed Naleigh. She was born with a congenital heart defect that was repaired with open heart surgery before she left South Korea.
Heigl, 33, has a Korean older sister, Meg, who was adopted three years before Heigl was born. "I wanted my own family to resemble the one I came from," Heigl told Scholastic Parent & Child earlier this year, "so I always knew I wanted to adopt from Korea."
Former "Grey's Anatomy" star Heigl most recently appeared in the bounty-hunter comedy film "One for the Money."