By Molly McGonigle
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Johansson first cut her famously long locks over the summer to a shoulder length cut, but has taken the plunge and gone even shorter this time.
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She has updated her look with a bob which angles up in the back and she's embraced a tousled look to give her bone-straight hair some style and volume.
Johansson isn't the only young female celeb to recently choose a much shorter hairstyle. Ashlee Simpson and Keira Knightley also recently made headlines with similar bob styles.
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