It seems like only yesterday we were watching him on Smallville, but now Jensen Ackles and his wive Danneel have welcomed their first child into the world. N'aww.

The pair got hitched back in May 2010 after thee years together, and announced the impending arrival in January of this year. Proud mum Danneel took to Twitter to reveal that their little one had made her entrance into the world safe and sound just a few days ago.

"We are happy to announce the birth of our precious baby girl, Justice Jay 'JJ' Ackles," she tweeted. "She was born happy and healthy on May 30th." Justice Ackles is quite a strong name for the wee nipper, so we're not surprised that some fans suggested she could be a "superhero".

"That is what I intended", mammy replied. We half hope she's being serious...