Two days after the birth of his baby daughter, Winnie Rose, Jimmy Fallon shared a picture of the newborn on Twitter Credit: Courtesy of Jimmy Fallon

Girl, meet world! On Thursday, July 25, two days after welcoming a baby with wife Nancy Fallon, new dad Jimmy Fallon shared a picture of his little bundle of joy on Twitter.

"I would like to introduce...Winnie Rose Fallon," the Late Night host captioned the adorable snapshot, which showed a close-up of the sleeping newborn's sweet face.

Speaking about the surprise birth of his daughter one night earlier on his show, the Saturday Night Live alum said fatherhood was an exhausting but rewarding experience. "It's been a crazy couple of days -- well, actually, just one day," he quipped in his opening monologue. "It was just yesterday. It feels like I've had a four day conference."

"It's very taxing on the fathers. I don't know how it is for the mothers, but [it's] very taxing [for us]," he joked. "I'm emotionally drained. I'm a father of a beautiful baby girl. She's so cute. Her name is Winnie Rose Fallon and she's so cute. She's 5 pounds, 9 ounces."

Fallon and his film producer wife have been married since December 2007. This is their first child.