Kristen Bell and her actor husband Dax Shepard are now parents of two! On Friday (Dec 19th) the happy couple, who already share a 19-month-old daughter Lincoln, confirmed they have welcomed their second baby girl, Delta, together.

Daz Shepard
Shepard and Bell recently welcomed their second daughter into the world

The proud father announced the new arrival via a humorous tweet that read, "Delta Bell Shepard is here. She doesn't look like either @IMKristenBell or me, but we're gonna keep her anyway. #christmascameearly."

The 'Frozen' star also tweeted, "The estrogen has now hit critical mass! Good luck, @daxshepard1. And welcome to the world DELTA BELL SHEPARD :)"

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The couple first announced that they were expecting another baby in June. "I can confirm that Kristen and Dax are expecting their second child and a sibling for Lincoln," their rep said in a statement at the time. "The whole family is beyond excited."

Several months later, Bell revealed that she and Shepard had chosen a name for their baby. "We had a little bit of a breakthrough. We've settled on one, thankfully," she told People magazine in September. "It's a lot of pressure, especially because we felt 'Lincoln' was so perfect."

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The acting duo became engaged four years ago in January 2010, and tied the knot in October of last year (2013).

Bell took to twitter to confirm her marriage, and shared the news just one day after they walked down the aisle at a ceremony held in Beverly Hills, LA. Bell tweeted, "Wife coffee tastes way better than regular coffee in the morning :)" whilst tagging Shepard's twitter handle.