Nancy Juvonen, Jimmy Fallon Nancy Juvonen, Jimmy Fallon

Jimmy Fallon revealed the name of his baby girl during his Late Night monologue Wednesday.

"I'm the father of a beautiful baby girl," he said. "Her name is Winnie Rose Fallon and she's so cute. She's 5 pounds, 9 ounces. Me and my wife are so happy. Thank you all for all the well-wishes on Facebook and Twitter and the blogs. I'm just so happy."

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Fallon, 38, and his wife, Nancy Juvonen, 46, welcomed their first child on Tuesday morning. The couple wed in 2007.