The possibility of another baby being born into the Brown family was a hot topic on season 5 of Sister Wives, but the potential drama surrounding the subject could still be having an effect on the family's overall relationship.

Meri Squashes Rumors She's No Longer Happy With The Family

After the July 27 tell-all, which saw Christine walk out after the topic of Robyn and Kody potentially having another baby together was brought up, the topic became off-limits and the family refused to confirm or deny rumors Robyn was actually pregnant with the family's 18th child. And though a few months have since passed and the drama should have faded away, it appears there may still be issues between Kody's third and fourth wives.

Robyn's only child thus far with Kody, Solomon, turned three on October 26, and both his parents took to Twitter to gush about their adorable son, the youngest member of their large family.

Meri Posts Photo With A New Baby & Confuses Fans

"Happy 3rd birthday to our baby boy Solomon! Where does the time go? He is such a fun blessing!" Robyn tweeted alongside a photo of her son. Kody then repeated Robyn's tweet and added "Call him Mr. Busy!"

And while they didn't individually tweet happy birthday wishes to the youngest Brown child, both Meri and Janelle did retweet what Robyn wrote about her son-but Christine was notably absent in sharing anything on her feed about Solomon, instead focusing on sharing a photo of her youngest child with Kody, daughter Truely, in her Halloween costume.

Following her reaction at the tell-all over the summer, it could be a hint that Christine may be jealous that Robyn is the wife Kody is focusing on having more children with instead of her-and the resulting drama could have an impact on the family's show.

So far, Kody's children with each of his wives include daughter Mariah (with Meri); sons Logan, Hunter, Garrison and Gabriel and daughters Madison and Savanah (with Janelle); daughters Aspyn, Mykelti, Gwendlyn, Ysabel and Truely and son Paedon (with Christine); and Solomon (with Robyn). Kody also adopted Robyn's children from a previous marriage, son Dayton and daughters Aurora and Breanna.

The family is expected to return to TLC with their newest season of the show in 2015, though a specific premiere date has not been announced.

Tags: Sister Wives TLC Reality TV