The pair’s rep confirmed to People that mum and baby are doing well and dad is “ecstatic” at the arrival of their little one.
The singer songwriter and his actress wife have named their new little bundle of joy, Silas Randall Timberlake. For now, further details are being kept private.
Silas was the middle name of Justin’s maternal grandfather Bill Bomar, who died in 2012, while Randall is his own middle name and his father’s first name.
The notoriously private pair, waited until Justin’s 34th birthday to confirm they were expecting their first child.
“Thank you EVERYONE for the Bday wishes! This year, I’m getting the GREATEST GIFT EVER. CAN’T WAIT,” he captioned a photo of himself kissing Biel’s bare baby belly.
Justin used his iHeartRadio Music Award speech as an opportunity to thank his wife who he called his “best friend and favorite collaborator.”
“I can’t wait to see our greatest creation yet,” Justin said. “Daddy’s heading home right now to innovate by learning how to change a poopy diaper and get my swaddle on!”