Justin Timberlake and Jessica Biel’s son Silas celebrated his 10th birthday April 8. Scroll through photos the singer and the actress, who are also parents to son Phineas, have shared of their family.
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Watch: Jessica Biel Shares “Joy and Challenges” of Parenting With Justin Timberlake
When it comes to Silas and Phineas‘ biggest fan, it’s gonna, gonna, gonna, gonna—it’s gonna be JT.
Of course, we mean their dad Justin Timberlake.
“My 2 greatest gifts,” the *NSYNC alum wrote on Instagram last Father’s Day. “I learn more about myself everyday just because you both chose me to be your Dad. I will always be there for you through your peaks and valleys… to lift you up and show you how high you can take this life and to pick you up when you fall. And, of course, to flood you with insufferable Dad-jokes all along the way. I love you both so much. Thank you for giving me my biggest purpose.”
Justin shares this supportive title with wife Jessica Biel, who calls Silas, 10, and Phineas, 4, her “favorite guys on the planet” along with her husband.
The “Suit & Tie” singer, 44, and the 7th Heaven alum, 43, first became parents when they welcomed Silas—named in honor of Justin’s grandfather—on April 8, 2015.
“It’s an amazing, amazing experience,” Jessica told Today later that year about becoming a mom. “Incredibly hard, the hardest job in the world. I’ve never been more thankful and grateful to my own mother….What you have to do for your kid, it’s an amazing responsibility and the biggest joy ever.”
Then in 2020, she and Justin added more bliss to their family with the birth of Phineas, and Silas stepped into his big brother role.
“Right now, he’s very much liking it,” the Grammy winner said on a January 2021 episode of The Ellen DeGeneres Show. “But Phin can’t walk yet or chase him down. So, I don’t know. We’ll see what happens.”
Since then, though, the siblings’ bond has only grown.
“It’s so cute to see these two together,” Jessica added later that year, “because they both think the other one is hilarious.”

Fans just need to look at her and Justin’s Instagram feeds to see photos of the brothers sitting side by side at the piano, watching cartoons or joining their dad on tour. Still, the couple are protective of their kids’ privacy and shield their faces on social media. They’ve also taken the step of moving away from the paparazzi to Montana.
“You get hammered in the East Coast. You kind of get hammered on the West Coast. That’s why we don’t really live there anymore,” Jessica said on a November episode of Let’s Talk Off Camera With Kelly Ripa. “Just trying to create some normalcy for these kids. We want to share our family with our loved ones and friends and also we understand that our job has this major public-facing element….But also, these kids didn’t choose this. I don’t want to expose them in a way until they have an ability to make that decision for themselves.”
However, the Candy star noted Silas looks so much like her that they practically “have the same face.” And she and Justin can’t believe how quickly time has flown.
“He went from this little guy to this kind of more grown-up kid,” Jessica continued. “Even Justin and I are like, ‘Wow, this kid is looking different all of a sudden. He’s just growing.’ It’s so amazing.”
In honor of Silas’ recent birthday, keep reading to see more of Jessica and Justin’s family photos.




