Jensen Ackles, a star on The CW series Supernatural, is a father! The actor’s wife, Danneel Harris confirmed on Twitter that she gave birth to their daughter late last month.

Harris tweeted Thursday night that she gave birth on May 30. The little girl’s name is Justice Jay "JJ" Ackles. “She was born happy and healthy on May 30th,” Harris wrote.

According to Access Hollywood, the couple did not announced that they were expecting until January. Harris is also an actress, starring on One Life To Live and One Tree Hill.

In January, she thanked her fans for the well wishes, writing "Thank you for all the well wishes. We are very excited about our soon to be new addition."

HollywoodLife notes that the two met in 2007 when they made Ten Inch Hero together. They became engaged in 2009 and married a year later in Dallas.

Ackles plays Dean Winchester on Supernatural, which is returning in the Fall. His other credits include Smallville, My Bloody Valentine, Dawson's Creek and Days of Our Lives.

image: TheCW