#10: Alison Arngrim and Melissa Gilbert Were Real-Life Best Friends
Although their characters were bitter rivals on screen, Alison Arngrim and Melissa Gilbert were close friends behind the scenes. They spent their downtime between takes laughing, joking, and inventing games to pass the time during long days on set.

One of their favorite pastimes was playing “territory wars,” a playful game that had them claiming and defending different parts of the set as their own. Their friendship made filming more fun — and added a layer of chemistry that made their on-screen battles even more believable.
