Netflix's romantic drama Sweet Magnolias has introduced audiences to many characters, but one of them, Katie, was played by a different actor in the show's third season. Based on Sheryl Woods' bestselling series, Sweet Magnolias centers around a trio of friends living in a small town called Serenity and juggling the various challenges life throws at them. While the series has a lot of great things going for it, Sweet Magnolias' cast is undoubtedly its best highlight.