Nancy Juvonen, Jimmy Fallon Nancy Juvonen, Jimmy Fallon

Jimmy Fallon revealed that he and his wife Nancy Juvonen Fallon used a surrogate to welcome daughter Winnie Rose last month.

On the Today show Friday, Savannah Guthrie played a sneak peek during her interview with Fallon, set to air next week, which featured the new father opening up about his surrogate secret. "My wife and I have been trying for a while to have a baby," Fallon said. "And so we've tried a bunch of things. And so we had a surrogate."

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"This time, we just said we're not telling anybody," he continued "It'd just be more fun if it was just private between me and my wife, and we get to introduce her to everybody. When it happened, we were shocked!"

Winnie is the first child for the couple, who married in 2007.

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