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Five years ago, this momentous tweet was sent

And on April 15th 2010, Niall Horan performed in front of the X Factor judges

Which, as we all know, led to these five being put together

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#5YearsSinceNiallsAudition is now all over Twitter, throwing up nostalgic gems like this

And the fact that they got his name wrong during X Factor

Twitter Twitter

Look at him there.

But mostly fans are just showing hysterical pride in the Mullingar man

andrea / Twitter andrea / Twitter / Twitter

It’s just been a complete pride-fest on Twitter today from all the Directioners out there

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The transformation is now complete

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Lionel Cironneau Lionel Cironneau

So much can change in five years.

More Niall Horan featured as a belligerent aul lad in the most Irish video ever>

More Niall Horan snotting himself while caddying for Rory McIlroy will give you a giggle>