フレンズ ファン spots one moment Rachel Green wasn't played によって Jennifer Aniston 

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fan has made a shocking discovery - there was a moment where Rachel wasn\'t played by Jennifer Aniston.

The random recasting occurred in season 9 episode 15, \'The One with the Mugging\', where a stand-in is spotted for a couple of seconds.

The woman doesn\'t look at all like the actress and is wearing a completely different top as she stands grinning behind Joey.

So how has no-one noticed it before? Now it\'s been pointed out, it\'s really, really obvious...

You can\'t fool a #Friends fanatic. Why is this not-Rachel standing in for Rachel in this ep? https://t.co/7U8K9VAhl4 pic.twitter.com/drO44q9qax

​Well, don\'t be too stunned - there is a fairly simple explanation. The moment comes from the HD remastered version of the episode, which has a 16:9 aspect ratio - wider than the 4:3 format it was originally edited to be broadcast in.

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In other words, none of us would have been able to see the Anti-Rachel when the show went out on TV, as the sides of the screen would have been cut off, and it\'s only in its polished, widescreen format that the stand-in reveals herself.

It\'s not the first time it\'s happened on a HD remaster of a classic show. Indeed, it isn\'t even the first time it\'s happened on 

​, as fake Monica will have you know:

Friends season 8. Episode 5. Monica turns into a stranger ... Wtf pic.twitter.com/J2i5TluzZa

— Sarah Lepa (@SarahLepa) October 26, 2015

Which begs the question - how many other times did this happen on the New York sitcom? And if that\'s not an excuse to binge-watch the entire series all over again, we don\'t know what is...

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