Kyle Richards' Daughter Farrah Brittany Congratulated by Baby Daddy's Estranged Wife

Kyle Richards' daughter Farrah Brittany got some early support from her baby daddy's estranged wife ... months before Zach Goldsmith was publicly revealed as the father.

Jennifer Hamilton-Goldsmith congratulated Farrah when the "Buying Beverly Hills" star announced her pregnancy back in July, commenting ... "Happy for you @farrahbritt :)."

Farrah responded, "Thank you so much Jen means a lot 🤍🤍🤍."

At the time, Farrah kept the identity of her baby's father under wraps, but that changed over the weekend when she posted a video from her gender reveal and announced she and Zach are expecting a baby boy.

The reveal sparked questions online about Zach's marital status, but he quickly fired back at one commenter who suggested he was still married, saying the person had "ZERO clue" about his situation.

Farrah also liked a comment pointing out Zach and Jennifer had separated some time ago and that he'd previously discussed the split on "Buying Beverly Hills."

Zach and Farrah both appeared on the Netflix reality series, which followed Kyle's estranged husband Mauricio Umansky's real estate company, The Agency. The couple works for the firm.