Mandy Moore is known for being as sweet as her first hit single, "Candy"—but these days she's more Godiva than, say, Chewy Spree. At 17, Mandy has already put out three albums, is the face for Neutrogena, has hosted her own show on MTV, and has landed roles in two movies (including her first starring role, in this month's "A Walk to Remember"). On top of that, she's in an amazing relationship (boyfriend Wilmer Valderrama, 22, plays Fez on "That '70s Show"). Not only is she making big things happen for herself, but she's totally down to earth. She's the epitome of a growing phenomenon: The Power Girl. Mandy's calling all the shots now when it comes to her career—and her life. And we must say, all this strength and confidence looks really good on her (and we totally love the brown hair, too!)...