Most of the cast of the new Mean Girls movie musical were just 3 or 4 years old when the original film hit theaters in 2004. But that doesn’t mean the high school comedy is any less relatable to them today. “I’ve probably watched it a hundred times. It’s such a staple,” says Australia native Angourie Rice, 23, who steps into Lindsay Lohan’s role as naive newcomer Cady alongside the popular Plastics played by Reneé Rapp, 24, Bebe Wood, 22, and Avantika, 19. The film’s writer, Tina Fey, says