The Frozen star welcomed a baby girl alongside husband Dax Shepard.
The new father-of-two took to Twitter to share the happy news with followers, writing: “Delta Bell Shepard is here.”
He then tweeted humourously: “She doesn’t look like either Kristen or me, but we’re gonna keep her anyway.”
Time will tell which good looking parent baby Delta will take after!
The new addition is the couple’s second child, a sister for 1-year-old daughter Lincoln.
Kristen, 34, took to Twitter after her husband broke the news, writing: “The estrogen has now hit critical mass! Good luck, Dax. And welcome to the world DELTA BELL SHEPARD.”
The name Delta is thought to mean ‘mouth of the river’ as well as being a letter in the Greek alphabet.
Congratulations Dax and Kristen!
You may also be interested in: BABY NAME TRENDS FOR 2015