Justin Timberlake confirms he and Jessica Biel welcomed 2nd son, reveals his name

The rumors are true: Justin Timberlake and Jessica Biel are parents of two.

In a sneak peek of Monday's episode of "The Ellen DeGeneres Show," the former NSYNC singer, 39, confirmed he and Biel, 38, privately welcomed their second child and his name is Phineas.

DeGeneres shared a clip of her upcoming interview over the weekend, in which she tells Timberlake, "You're a dad again. You have another little child."

The 10-time Grammy Award-winner confirmed that, indeed, he is a father of two and said his newborn is "awesome and so cute."

"Nobody's sleeping," Timberlake shared. "But we're thrilled. We're thrilled and couldn't be happier. Very grateful."

It was also revealed during the interview that DeGeneres was one of the first people -- outside of immediate family -- to learn of Biel's pregnancy.

"I think we were FaceTiming and you said, 'Hey, you want to know a secret?' and then Jessica walked in and you put your hand on her stomach," DeGeneres recalled. "You were like, 'I'm having another baby!'"

Timberlake did not disclose when the couple welcomed Phineas.

Timberlake and Biel, who married in 2012 after having dated since 2007, also have a 5-year-old son, Silas.