Jimmy Fallon reveals his daughter's name

Nancy Juvonen Fallon and Jimmy Fallon attend the "Schiaparelli And Prada: Impossible Conversations" Costume Institute Gala at the Metropolitan Museum of Art on May 7, 2012, in New York.
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Jimmy Fallon is one proud papa.

Afterwelcoming a daughter with wife Nancy Juvonen Fallon on Tuesday, the "Late Night" host was happy to gush about their newborn baby girl -- including revealing the little one's name.

In his opening monologue on Wednesday's episode of "Late Night," Fallon told the audience, "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 lbs., 9 oz."

"Me and my wife are so happy," he added, thanking fans for their well-wishes and joking that they haven't yet had time to respond to everyone's messages...including from another new set of high-profile parents.

"We haven't had a chance to respond to everyone's calls and messages but let me just say, yes, William and Kate, we'll definitely set up a playdate," he joked.

Fallon and his wife, a producer who co-owns Flower Films with Drew Barrymore, have been married since 2007. Winnie is the first child for the couple.