Singer Justin Timberlake has shared the first photograph of his newborn son Silas. The singer showed off his gorgeous bundle of joy being cradled by mother Jessica Biel.

The pair are seen looking into the camera, with Biel flashing a big smile and their son Silas squinting into the lens, reports mirror.co.uk.

"Sexy Back" hitmaker posted the photograph to his image-sharing website Instagram page with the caption: "The Timberlakes are ready!!! GO GRIZZ! #GritNGrind #Playoffs #BabyGrizzROAR"

The "Accidental Love" actress gave birth to Silas on April 11 and it's also the first time she has been photographed since the birth.

Biel looked glowing wearing minimal makeup in a blue baseball cap, black vest top and with her blue lace brassiere just visible.

The duo are said to be quietly adjusting to parenthood at their home in Montana, with Timberlake being "so excited" after becoming a father for the first time.

"Justin is so excited, he doesn't know what to do with himself," a source close to the couple said.

"Jessica sees herself as a mom of boys, so it worked out perfectly,"the insider told Us Weekly magazine.

"Their house is all set up for the baby. They want to raise him out of the spotlight."

But they plan to return to their Hollywood Hills mansion in the near future when Biel opens her new restaurant, Au Fudge, here.

"Jess is opening her kids' restaurant, Au Fudge, near LA in five months and has tons of meetings," a second source explained.

The pair are getting support from friends and family members, including Timberlake's mother, Lynn Harless.

The friend said: "Lynn jokes she wants Silas all to herself!"