It's a boy for "7^th Heaven" star Beverely Mitchell.

The 33-year-old pregnant actress and her husband Miachel Cameron revealed on Wednesday that their second child will be a son. The little one will be joining the couple's 18-month-old daughter Kenzie for what Mitchell affectionately calls "a lifetime of adventures."

"So excited that Kenzie is going to have a little BROTHER! Yep, it's a boy!" Mitchell wrote on WhoSay on Wednesday.

The actress posted a sweet photo on WhoSay of her and Cameron holding toddler Kenzie Lynne.

"We are thrilled and looking forward to a lifetime of adventures!" added Mitchell.

The "7^th Heaven" alum announced in early September that she was pregnant with her second baby by posting an adorable family portrait in the snow.

"Can't believe in 2015 we will be a family of 4!!!" Mitchell captioned the snapshot.

The actress later took to Twitter to thank fans and followers for their congratulatory messages.

'So blown away by all the love and well wishes,' wrote Mitchell. 'We are super excited and feeling so blessed and grateful! Thank you for all the love!!'

The pregnant mom discussed becoming a mom in a September interview with PEOPLE.

"We didn't think we were ready, but at the same time, what does that mean," said the actress. "It happened exactly when it should have for us."

"I fully embrace mommyhood to another level to where all I want to do is be a parent," she gushed to the publication in June.

"I think what's been surprising is just how natural and how amazing it is," added Mitchell, "and how I really don't want to do anything else."