Goodbye blonde locks, hello brunette! Dakota Fanning ditched her signature blonde hair (which she's sported for most of her career) in favor of a darker chestnut shade. Her new look was posted on the the Instagram account that she shares with younger sister Elle on Oct. 14. "Well look who turned into a brunette!" the caption reads. This is the first hair change we've seen from the Twilight star since she showed off hot-pink tips back in January.