In the season 4 renewal announcement, Erin Underhill, president of Universal Television, said, "Thanks to [Fellowes] and the phenomenally talented cast and crew, each season of The Gilded Age delivers stories rich in drama and history, stellar performances and stunning production value."

With Bertha and George’s marriage on the brink and a baby on the way, there's a lot on the table for the HBO period drama. Here's everything to know.