Justin Timberlake surprised fans this week by confirming hed become a dad for the second time.

Appearing on The Ellen DeGeneres Show Monday, the 10-time Grammy winner said he and wife Jessica Biel have welcomed a son, Phineas.

Hes awesome and hes so cute, Timberlake said.

It was the first time the actor and singer has spoken publicly about the birth, though reports Biel had delivered a child appeared in a number of media outlets throughout the latter half of last year. Though light on specifics surrounding Phineas birth,Timberlake added that he and Biel were thrilled by their new arrival.

[We] couldnt be happier, he said. Very grateful.

Watch part of Justin Timberlakes Ellen DeGeneres Show interview below.

Timberlake and Biel also have a 5-year-old son, Silas Randall .

As to how Silas was adjusting to being a big brother, Timberlake said, Right now hes very much liking it. But you know, Phin cant walk yet or chase him down, so well see what happens.

Elsewhere in the interview, Timberlake spoke about his new film Palmer , as well as his plans to perform at President-elect Joe Biden s inauguration Wednesday.

Its a huge honor, said the former *NSYNC star, who recorded the vocals for his latest single, Better Days , on the eve of the 2020 election . I dont know if we pressed them. Or, lets just go with like, they wanted us to they asked us to do it. But I think maybe somebody from my team may have been like, Wed do it if you want us to.