Singer Justin Timberlake appeared on "The Tonight Show" hosted by Jimmy Fallon on Wednesday night where he shared several new pictures of 5-month-old son, Silas Randall Timberlake, including wife and mother, actress Jennifer Biel.

Fans got a real treat when "The Tonight Show" not only displayed new pictures of the baby during the show but also posted the pictures on Twitter for everyone to see.

In one photo, Silas is looking straight into the camera with a big smile as his proud father holds him.

Biel is kissing her son on the cheek after a bath in another photo.

A third photo shows their infant son seated in Timberlake's lap on a couch.

"We're watching the PGA championship," Justin said, when "The Tonight Show" displayed the picture. He joked that his son is a "great putter."

The "Not A Bad Thing" singer admitted, "He can't hold anything."

Since Silas was born in April, the 34-year-old singer and Biel, have shared only two photos of their son on social media. The first picture fans ever saw was posted to Timberlake's Instagram account on April 19, showing Biel holding Silas while he wore a Memphis Grizzlies shirt. A second photo followed in June on Father's Day, showing the child in Timberlake's arms wearing a onesie with the words "I Love Dad" embroidered on the backside.

"It's the greatest thing in the world, right?" Fallon said to Timberlake, referring to fatherhood. "It is the most insanely, amazing, most beautiful, unbelievable thing that could ever happen to you."

He also revealed to "The Tonight Show" audience that Silas' first word was "da-da."

Earlier on Wednesday, Timberlake and Fallon delighted the crowd at Arthur Ashe Stadium during the U.S. Open when they broke out into a "Single Ladies" dance routine once the camera panned to them during a changeover. The antics were caught on video.