Jimmy Fallon and wife welcome a baby girl

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. Dimitrios Kambouris/Getty Images

Jimmy Fallon is taking on a new role -- fatherhood.

The "Late Night" host and his wife, Nancy Juvonen Fallon, have welcomed a daughter, his rep confirmed to People.

The baby girl was born Tuesday at 6:21 a.m. She is the first child for the couple.

The rep added that the new parents are "overjoyed about the arrival of their beautiful daughter."

Fallon, 38, will take over "The Tonight Show" from Jay Leno next year. His wife, 46, co-founded the production company Flower Films with Drew Barrymore. She married the former "Saturday Night Live" star in December 2007.

  • Jessica Derschowitz