"The Tonight Show" Host Jimmy Fallon, Wife Welcome Second Daughter

'The Tonight Show' host Jimmy Fallon and wife Nancy Juvonen welcomed a second baby girl on  Wednesday (3 December).

NBC informed E News that "due to unexpected but delightful circumstances, 'The Tonight Show' Starring Jimmy Fallon has had to cancel tapings for today and tomorrow."

The baby, who the couple has named Frances Cole Fallon, was born in the morning. She weighed about 5 pounds 11 ounces and measured 18.5 inches long at the time of birth, MTV reports.

"Frances Cole Fallon officially entered the world at 8:45 a.m. on December 3, weighing 5 lbs., 11 ounces and is 18.5 inches long," a source close to the couple told E Online in a statement. The source further said that the couple chose to keep the pregnancy under wraps until their child was born.

The couple's elder daughter, Winnie Rose, was born just 16 months ago, in July 2013. Both the daughters were born with the help of a surrogate.

"Their new addition joins big sister, Winnie Rose, 1. The couple opted to keep their baby joy to themselves until their new daughter, Frances Cole, made her official debut. Both Fallon babies were born via surrogate."

Fallon, 40, married Juvonen, 47, in 2007. The two had met on the set of the movie "Fever Pitch" in which the television host starred alongside "50 First Dates" star Drew Barrymore, The Huffington Post reports.

After the birth of his elder daughter, the "Saturday Night Live" alum had admitted that adjusting to parenthood wasn't that easy.

"Yeah, I'm pretty tired. But basically it's a weird type of tired, where it's like you're so tired but you don't feel exhausted, you feel like, 'I just have to do this, so I'm gonna keep moving through this pace.' It's fun, it's fun tired because you're just excited to what she does next. It's exciting," he had said at the time.

He had told People that becoming a father was "the most exciting, amazing thing that ever happened to me."