Justin Timberlake and wife Jessica Biel want to raise baby son Silas Randall Timberlake "out of the spotlight" Credit: Kevin Mazur/Getty Images for GQ

Justin Timberlake and Jessica Biel are in seventh heaven with their newborn baby boy. After welcoming son Silas Randall Timberlake earlier this month, the "Not a Bad Thing" singer and the Accidental Love actress are blissfully settling into new parenthood.

"Jessica sees herself as a mom of boys, so it worked out perfectly," a source reveals in the new issue of Us Weekly, adding that first-time dad Timberlake, 34, is bursting at the seams with pride. "Justin is so excited, he doesn't know what to do with himself!"

Indeed, just two weeks before Biel gave birth, the 'N Sync alum gushed about his then-impending fatherhood at the iHeartRadio Music Awards, where he was honored with the coveted 2015 Innovator Award.

"You can't have innovation without creation, so finally, I want to thank my best friend, my favorite collaborator — my wife, Jessica, who's at home watching," he said sweetly. "Honey, I can't wait to see our greatest creation yet. Don't worry, Daddy's heading home right now to innovate by learning how to change a poopy diaper and get my swaddle on."

Home for the couple is their estate in the exclusive Yellowstone Club in Big Sky, Montana. "Their house is all set up for the baby," the insider tells Us. "They want to raise him out of the spotlight." 

A second source adds that "Jessica is happiest when she's in the mountains." However, Silas will spend at least part of his first months in his Hollywood Hills nursery, as Biel, 33, does business in California.

"Jess is opening her kids' restaurant, Au Fudge, near L.A. in five months and has tons of meetings," the pal tells Us.

Fortunately for the new parents, Timberlake's mom, Lynn Harless, is eager to babysit her grandchild. "Lynn jokes she wants Silas all to herself!" the source says.