Last night, Jimmy Fallon, 38, expressed the utter joy and excitement he's feeling as a new father.

"I'm your host 'dada'," he opened his "Late Night" monologue. "I'm the father of a beautiful baby girl, she's so cute. Her name is Winnie Rose Fallon and she's so cute."

Fallon joked that since his daughter's birth at 6:21 a.m. on Tuesday, he feels like he's been at a four-day conference. Winnie was born at 5 lbs., 9 oz.

Read: Jimmy Fallon and Wife Welcome Baby Girl

"It's very taxing on the fathers, I don't know how it is for the mothers," he added. "Me and my wife are so happy."

On behalf of himself and his wife Nancy Juvonen Fallon, Jimmy thanked everyone who posted well wishes on his Facebook wall or Twitter page.

"I hope I don't screw this up, I'm just so happy," he said playfully.

Then, of course, he had to reference the royal baby.

"Yes William and Kate, we'll definitely set up a play date, stop bothering me," the "SNL" alum joked. "Yes, everyone's still talking about the other baby."

Related: Jimmy Fallon to Replace Jay Leno

It's been a big year for Fallon. In April, it was announced he will replace Jay Leno in 2014 as host of the "Tonight Show." This move will bring the show's production back to New York City.

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