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We will always love Mary-Kate and Ashley!

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This girl was not a lost cause in her younger years, but we doubt that anybody saw THAT coming.

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One minute she was a frizzy haired, mud blooded little girl at Hogwarts and now….Wow!

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Taylor Swift, if somebody laid a bet on her getting famous after her middle school yearbook photo, they would be a wealthy, wealthy person today.

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Neville Longbottom just could not do anything right, whether it was in potions class or quidditch practice. Look at him now, who is laughing?

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Hayden Pannettiere is one of the hottest celebrities in all of showbiz, but did you see her on Remember the Titans? She was quite the tom-boy back in the day.

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Crab and Goyle were two of the most despicable characters in the entire Harry Potter series. But puberty really made Crab do a racial 180.

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Nobody pouts like Kristen Stewart, it is a well known and little debated fact. It is also a fact that she did puberty well, really well.

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This picture is obviously pretty old, and the Biebs has grown up a bit since then. But for a while there it seemed like puberty might never come for Justin.

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Crab and Goyle were two of the most despicable characters in the entire Harry Potter series. But puberty really made Crab do a racial 180.