Charmed

 "When Charmed began in 1998, the bond between Shannen (who played older sister Prue) and Holly (who played middle sister Piper) was almost instantaneous. They were more than just co-workers; they quickly became family. On screen, Prue was the strong, protective older sister; Piper was the warm-hearted, glue that held the family together. Off screen, their relationship mirrored that.

They were an inseparable pair behind the scenes, enduring long days of filming together and facing the pressures of fame together. Holly often described Shannen as the ultimate professional and someone who taught her a lot about acting. Their friendship was the foundation for the success of Charmed's early seasons, creating a genuine chemistry that viewers could feel on screen."