The Fallon family has just gotten bigger.

Per Entertainment Weekly, Jimmy Fallon and his wife, producer Nancy Juvonen, welcomed a baby girl Tuesday. A representative stated that they are “overjoyed about the arrival of their beautiful daughter,” and Fallon took to Twitter Wednesday to thank everyone for their well wishes: “Her first day was the best day of our lives. So happy. Thanks again.”

The couple met while working on the 2005 movie “Fever Pitch” and married in 2007. The child is their first.

On last night’s Late Night, Fallon began the show with a monologue about how thrilled he is to be a father and revealed his daughter’s name: Winnie Rose Fallon. He also joked about “the other baby” and how they would “definitely set up a play date” with William and Kate.

Congratulations to the happy couple on the newest addition to their family!