Great news for the man steering "The Tonight Show" these days: Jimmy Fallon and Nancy Juvonen welcome a new child to their home, a second baby girl for the married couple - surprise, surprise!

The news of the welcoming of Jimmy Fallon and Nancy Juvonen's baby into the world was kept a tight secret throughout the entire pregnancy, as they decided to keep matters as strictly private as possible - but now the couple can't wait to talk about the new bundle of joy that has arrived to their home!

A representative for the Jimmy Fallon and Nancy Juvonen marriage told People Magazine exclusively that the couple had just welcomed baby daughter Frances Cole Fallon into their home, a little girl that was born last Wednesday, December 3.

For even more detail, the tiniest member of the Juvonen-Fallon household was born at 8:45 am, weighs 5 pounds and 11 ounces and measures 18.5 inches - a healthy little child for Jimmy Fallon and Nancy Juvonen!

According to The Huffington Post, the Juvonen-Fallon marriage chose to keep their baby a secret until she was born and could be introduced to the world. As her 16 month-old sister Winnie Rose before her, Frances was born via a surrogate mother, though it is unclear whether the same woman was the one who carried both children.

According to The Associated Press, the announcement prompted NBC to cancel the scheduled tapings of "The Tonight Show" for both Wednesday and Thursday, as they gave their host some time to be spent with his now bigger family.

This has been a major year for Jimmy Fallon and Nancy Juvonen. Not only did he take over the role of hosting "The Tonight Show," he's also had some mad success in the program, creating a different format for late night television - unsurprisingly enough, due to his longtime tenure at Saturday Night Live, the show that saw Fallon become a star.

Congratulations on Jimmy Fallon, Nancy Juvonen and Winnie Rose for welcoming little Frances to their home this week!