By Alexis Tereszcuk - Breaking Celebrity News Entertainment Editor

Congratulations! 

Katherine Heigl has become a mom again!

The 33-year-old blonde One for the Money star is already a mother to 3-year-old daughter Naleigh and she just expanded her family by adopting another little girl.

Katherine and her husband Josh Kelley secretly adopted an 8-day-old baby girl from Louisiana in early April the National Enquirer reported.

“The whole adoption process for Katherine and Josh’s second child was like a covert operation,” a source said.

“As soon as they got the word the baby was born, Katherine and Josh flew from California to Louisiana to pick up their new daughter. But they didn’t want to let the cat out of the bag too soon about their new little girl.”

As Breaking Celebrity News previously reported, Katherine confirmed that they had been trying to adopt again earlier this year.

The former Grey’s Anatomy star and her singer hubby were even sneaky bringing the baby back on a plane to join her big sister Naleigh, whom they adopted from South Korea in 2009.

“To keep the whole thing under wraps, a friend sat with their baby five rows in back of them on the plane trip back to Los Angeles,” said the source.

“Only a select few people even know their newborn baby’s name!”

The proud papa is the one who spilled the beans about their new bundle of joy.