Happy 21st birthday, Dakota Fanning! Since her breakout performance at age 7, opposite Sean Penn in I Am Sam, Fanning continues to take Hollywood by storm. With more than a decade of experience under her belt, Fanning has made the seamless transition from child star to adult actress with quite the impressive résumé, which includes her being the youngest actor to earn a nomination for an individual SAG award! Her film credits range from the likes of Man on Fire, Hide and Seek, Sweet Home Alabama, The Secret Life of Bees, Push, The Twilight Saga, and The Runaways. In honor of Fanning's birthday, we're taking a look back at her long journey from child star to Hollywood starlet.