Kristen Bell and Dax Shepard have given birth to a baby girl.
The couple - who got engaged in 2009 - announced on Twitter on 28 March that they have welcomed Lincoln Bell Shephard - their first child together - into the world.
Dax, 38, wrote to his followers: "Lincoln Bell Shepard is here. She has mom's beauty. Hooray!"
Kristen joked on her blog, "My new roomate poops her pants and doesn't pay rent...basically @daxshepard1 pre-sobriety welcome baby Lincoln".
The couple, who have been engaged since 2009, announced they were expecting in November
The new mother was nervous towards the end of her pregnancy, and admitted she was relying on the help of friends who had already made the leap to parenthood.
Kristen, 32, had recently said: "I'm gathering advice from everyone. I have a lot of friends with kids and work with a lot of people with children, so I'm just asking what's their best bit of advice. The nice thing is that, hands down, every person I know that has ever had a kid has looked at me with confidence and said, 'Oh, this is the best thing you'll ever do with your entire life.' So, that's nice to know."