Jessica Biel, Justin Timberlake welcome second child

Justin Timberlake and Jessica Biel have reportedly welcomed their second child in secret. Photo / Getty Images

Jessica Biel has had a second child in secret.

The 38-year-old actress and her husband Justin Timberlake - who already have 5-year-old son Silas together - became parents for the second time, as Jessica gave birth to a baby boy earlier this week.

"The baby is cute, of course, it's Justin and Jessica!" Timberlake's former NSYNC bandmate Lance Bass, 41, told Entertainment Tonight, adding that he and the other group members were privy to the baby news "before anyone else".

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Once upon a time, a long LONG time ago… Mom and Dad put on some real clothes and stayed out past midnight. #Emmys

A post shared by Jessica Biel (@jessicabiel) on Sep 20, 2020 at 8:51am PDT

Bass said the NSYNC group text thread has been littered with baby chat, adding, "It's all been conversations about a newborn."

"(Justin and Jessica are) very, very happy."

The birth of their second child comes just under a year since they were thrust into the spotlight when pictures surfaces of Timberlake holding the hand of his co-star, Alisha Wainwright.

At the time Timberlake released an apology to Biel on Instagram.

"I stay away from gossip as much as I can, but for my family I feel it is important to address recent rumours that are hurting the people I love," Timberlake wrote.

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A post shared by Justin Timberlake (@justintimberlake) on Dec 4, 2019 at 5:05pm PST

"I displayed a strong lapse in judgment – but let me be clear – nothing happened between me and my co-star. I drank way too much that night and I regret my behaviour.

"I should have known better. This is not the example I want to set for my son. I apologise to my amazing wife and family for putting them through such an embarrassing situation, and I am focused on being the best husband and father I can be. This was not that."

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Happy Birthday to the LOVE of my life... A new adventure every day and a treasure to me. I can’t wait to share many more of these with you. Thanks for putting up with me when I smell funky after a round of golf or, when I smell funky in general. You are the mostest of the mostest, my love! I adore you. HUZ

A post shared by Justin Timberlake (@justintimberlake) on Mar 3, 2020 at 10:07am PST

In recent years, TImberlake has said he's become a "family man", and is now "picky" about the projects he takes on so that he can justify working away from his wife and son.

He added: "I always want to continue to be inspired.

"At this point in my life, I can be picky about the projects I'm going to work on.

"I choose wisely because I know it takes a lot of time to do the type of work that I want to do, whether it's making music or a film - or both in the case of Trolls World Tour.

"That time takes you away from your family, so it had better be something really, really inspiring."