The pair — who kept the pregnancy under-wraps for the best part of 7 months until JT confirmed the news with THIS all-telling bump selfie — have been distinctly more forthcoming with the details of their little arrival since the birth.
The date of which may be still a mystery, but considering Justin's last tweet was sent from his Twitter account on April 10th, we reckon the birth must have happened over the weekend.
Already having chatted to People Magazine in the US, the pair have confirmed the news by releasing a simple statement that says they are 'ecstatic' and that both mother and baby are doing splendidly.
And, unlike other A-list couples, the pair have already revealed their son's rather unusual name. Although, it looks like their hand was forced just a little bit...
Justin's mother Lynn Harless clearly wasn't able to contain her excitement as she took to her Twitter account to say: 'My amazing son and his beautiful wife have given us the most precious gift in the world! Silas Randall Timberlake! Named after my father and my son! Life is beautiful and we couldn't be happier! God bless you all and thanks for all the congrats!'
That's right — it'll be Silas Randall Timberlake that you'll need to needle point onto that quilt you've been tirelessly making...
As Lynn said, Randall was Justin's grandfather's name and Justin too shares it as his own middle name. So yep, while we're still not 100% where Silas came from, it looks like the rest of the baby's name has some heritage heavy roots — a really sweet touch considering the bizarre baby names employed by *some* celebs these days.
While we're still waiting on some baby pics to coo over, we couldn't be happier for this young family. Congratulations to Justin, Jessica, their new son Silas, Justin's excitable mother Lynn and the rest of the Timberlake-Biel brood!