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But the law of the jungle takes on a whole new meaning when the home-schooled 15-year-old enters public high school for the first time and ... rules that teenage girls face today.

Warning: This article contains spoilers for the new 'Mean Girls' movie. The cast of 'Mean Girls' chats with ET’s Denny Directo about the film, in theaters now, and the surprise OG cast member cameo.

Francis Scott Key High School students will perform one of the most beloved and true-to-life stories about high school ...