By now, you've probably seen the trailer for the latest Star Wars installment, The Force Awakens. If you're like me, you've already bought your tickets (come on, December 18!) But even a casual observer of the Star Wars phenomenon is probably at least a little bit curious about the massive film's newest star, 23-year-old British actress Daisy Ridley. She plays the lead role of Rey, a droid scrapper living on the desert planet Jakku. "When we find Rey, she's covered in grease and dirt. She's been living alone for a long time," says Amanda Knight, the film's makeup-department head. "She's dirty because she was scavenging parts from spaceships, so she had to really look like she's hard-core and gets into fights. This girl kicks ass." Here's how Knight, hair designer Lisa Tomblin, and their teams brought Rey to life.