He's a keeper!

Southern Charm star Kathryn Dennis, 24 — who gave birth to her second child, St. Julien Rembert Ravenel, on Nov. 9 — shared the first photo of her baby boy via Instagram on Thursday.

The infant's dad is Kathryn's costar and on-again-off-again boyfriend, Thomas Ravenel, 53, with whom she also has a daughter, Kensington, 18 months.

kathryn dennis

Kathryn first announced her pregnancy in September while opening up about her complicated relationship with Thomas.

"Thomas and I are always on and off, but we had a whirlwind romance that weekend. That's kind of how we were with the first pregnancy, too. Things were wishy-washy, but we embraced it," she told People magazine of finding out she was expecting.

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"We are friends. We communicate and things are pleasant. That's all I can really hope for," the red-head added.

While they're currently not a couple, Thomas said he's thrilled to welcome a son. "The greatest gift thus far in my life has been the privilege of being a father to my daughter Kensie…I feel doubly blessed," he previously said.

Congrats to both parents!