Emily Deschanel Welcomes Baby Boy!

Bones' Emily Deschanel and her husband, It's Always Sunny in Philadelphia co-star David Hornsby, welcomed their first child Wednesday. His name is Henry.

The happy couple married in 2010.

The new mom's co-star TJ Thyne took to Twitter to share the happy news after. "CONGRATULATIONS EMILY D!!!!!!!!!!!!" he Tweeted. "Yay yay yay!!! :o)"

Congratulations to Emily and David!

Shortly after her sister Emily announced the news, Zooey Deschanel could hardly contain her excitement, Tweeting: "I am super excited to be an aunt!"

Bones returns November 3 with a slightly shorter season due to Emily's pregnancy (also playing out on the show). Zooey is now starring in New Girl.

[Photo: WENN.com]