Justin Timberlake shares new photos of son Silas

NEW YORK, Sept. 10 (UPI) -- Justin Timberlake delighted fans by sharing new photos of son Silas on Wednesday.

The 34-year-old singer opened up about fatherhood during an appearance on The Tonight Show Starring Jimmy Fallon. Timberlake and wife Jessica Biel welcomed Silas, their first child, in April.

"It is the most insanely amazing, most beautiful, unbelievable thing that can ever happen to you," he said of being a dad. "He was five months yesterday, [Sept. 8]."

Timberlake shared pictures of Biel with Silas in an elephant towel, himself holding Silas up to the camera and himself and Silas watching the PGA Championship. He also proudly revealed his son's first word was "da-da."

Timberlake and Biel have been together since 2007, and married in Fasano, Italy, in October 2012. The singer will compose the soundtrack for Biel's upcoming film The Devil and the Deep Blue Sea, and the actress is also scheduled for A Kind of Murder with Patrick Wilson.