Christensen gave birth to her baby girl at her home in California. The 33-year-old star took to Twitter on Tuesday evening to reveal that she was getting ready to deliver. " I'm in labor. Right now," she tweeted.
Christensen also joked around on Twitter with her friend and Parenthood co-star, Dax Shepherd before going into labor.
"Can I drive you to the hospital?" Shepherd messaged Christensen Tuesday morning. "I want to see you at your very chubbiest point."
Later that night, she responded, "I am fully in labor right now. Wanna come over?"
On Thursday, Shepherd messaged her back, writing, "S**t! I was out of town for two days. This is what I get!"
"That's ok," Christensen replied. "By the time the doc got here he could see her head. She was a speeding bullet. A rocket."