Sophie Turner and Maisie Williams epitomize what it means to be best friends.

The "Game of Thrones" actresses met when they were both cast on the hit HBO show to play sisters and have been besties ever since. They even have a friendship name: "Mophie."

Whether they are goofing off on-set or off, it's a joy to watch their friendship.

Here are eight moments where these two have proven they are "soul mates."