One 7th Heaven star's family is expanding yet again. Beverley Mitchell is pregnant and is adding to her brood with a sweet baby boy! Her now family of three, with husband Michael Cameron, will soon become a family of four. On Wednesday morning, Mitchell made the announcement via her WhoSay page, where she posted an adorable family photo (below), including her little girl Kenzie Lynne.

Back in September, Mitchell revealed her second pregnancy, but not the gender. Now, we know 18-month-old Kenzie is getting a little brother sometime next year. "So excited that Kenzie is going to have a little BROTHER! Yep, it's a boy! We are thrilled and looking forward to a lifetime of adventures! Thank you #ashleyburnsphotography for the great pic!," Mitchell wrote.

For 11 seasons, Mitchell was best known for her character Lucy Camden on 7th Heaven. Eventually, Lucy married and wanted to start a family, but sadly suffered a miscarriage and struggled with the loss of her twins. Lucy was a role model for all mothers dealing with such a tragedy. Now, the actress continues to be a voice for other women, as Mitchell is an outspoken mama, and even once held a "Moms & Babies" blog with People .

It's no surprise that Mitchell revealed to her fans she's expecting a boy via her social media page, because that's where she announces all things exciting — like that recent 7th Heaven reunion. I'm sure she'll continue to post updates about her next child, in addition to how/if raising a girl is different than raising a boy.

Congrats to the happy couple and family!

Image: Beverley Mitchell/Who Say